/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:33:18,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:33:18,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:33:18,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:33:18,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:33:18,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:33:18,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:33:18,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:33:18,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:33:18,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:33:18,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:33:18,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:33:18,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:33:18,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:33:18,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:33:18,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:33:18,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:33:18,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:33:18,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:33:18,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:33:18,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:33:18,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:33:18,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:33:18,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:33:18,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:33:18,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:33:18,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:33:18,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:33:18,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:33:18,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:33:18,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:33:18,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:33:18,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:33:18,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:33:18,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:33:18,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:33:18,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:33:18,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:33:18,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:33:18,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:33:18,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:33:18,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:33:18,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:33:18,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:33:18,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:33:18,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:33:18,646 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:33:18,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:33:18,646 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:33:18,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:33:18,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:33:18,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:33:18,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:33:18,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:33:18,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:33:18,648 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:33:18,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:33:18,648 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:33:18,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:33:18,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:33:18,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:33:18,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:33:18,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:33:18,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:33:18,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:33:18,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:33:18,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:33:18,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:33:18,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:33:18,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:33:18,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:33:18,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:33:18,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:33:18,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:33:18,956 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:33:18,957 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:33:18,957 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c [2019-11-07 04:33:19,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17594a0a1/ffd565196b714e648523d8e7842d3e97/FLAG08c1bcd79 [2019-11-07 04:33:19,655 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:33:19,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c [2019-11-07 04:33:19,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17594a0a1/ffd565196b714e648523d8e7842d3e97/FLAG08c1bcd79 [2019-11-07 04:33:19,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17594a0a1/ffd565196b714e648523d8e7842d3e97 [2019-11-07 04:33:19,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:33:19,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:33:19,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:33:19,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:33:19,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:33:19,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:19" (1/1) ... [2019-11-07 04:33:19,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cd9037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:19, skipping insertion in model container [2019-11-07 04:33:19,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:19" (1/1) ... [2019-11-07 04:33:19,956 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:33:20,018 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:33:20,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:33:20,580 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:33:20,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:33:20,719 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:33:20,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20 WrapperNode [2019-11-07 04:33:20,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:33:20,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:33:20,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:33:20,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:33:20,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (1/1) ... [2019-11-07 04:33:20,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (1/1) ... [2019-11-07 04:33:20,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (1/1) ... [2019-11-07 04:33:20,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (1/1) ... [2019-11-07 04:33:20,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (1/1) ... [2019-11-07 04:33:20,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (1/1) ... [2019-11-07 04:33:20,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (1/1) ... [2019-11-07 04:33:20,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:33:20,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:33:20,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:33:20,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:33:20,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:33:20,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:33:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:33:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:33:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:33:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:33:20,883 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:33:20,884 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-07 04:33:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:33:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:33:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:33:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:33:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:33:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:33:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:33:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:33:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 04:33:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:33:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:33:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:33:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:33:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:33:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:33:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:33:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:33:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:33:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:33:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:33:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:33:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:33:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:33:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:33:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:33:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:33:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:33:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:33:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:33:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:33:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:33:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:33:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:33:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:33:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:33:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:33:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:33:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:33:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:33:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:33:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:33:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:33:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:33:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:33:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:33:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:33:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:33:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:33:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:33:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 04:33:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:33:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:33:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:33:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:33:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:33:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-07 04:33:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:33:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:33:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:33:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:33:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:33:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:33:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:33:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:33:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:33:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:33:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:33:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:33:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:33:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:33:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:33:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:33:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:33:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:33:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:33:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:33:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:33:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:33:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:33:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:33:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:33:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:33:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:33:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:33:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:33:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:33:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:33:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:33:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:33:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:33:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:33:22,606 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:33:22,606 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:33:22,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:22 BoogieIcfgContainer [2019-11-07 04:33:22,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:33:22,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:33:22,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:33:22,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:33:22,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:33:19" (1/3) ... [2019-11-07 04:33:22,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7a9454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:22, skipping insertion in model container [2019-11-07 04:33:22,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:20" (2/3) ... [2019-11-07 04:33:22,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7a9454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:22, skipping insertion in model container [2019-11-07 04:33:22,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:22" (3/3) ... [2019-11-07 04:33:22,616 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product56.cil.c [2019-11-07 04:33:22,626 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:33:22,635 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:33:22,648 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:33:22,685 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:33:22,685 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:33:22,686 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:33:22,686 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:33:22,686 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:33:22,687 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:33:22,687 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:33:22,687 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:33:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2019-11-07 04:33:22,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 04:33:22,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:22,737 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:33:22,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:22,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1305827557, now seen corresponding path program 1 times [2019-11-07 04:33:22,757 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:22,757 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207313706] [2019-11-07 04:33:22,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:23,159 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207313706] [2019-11-07 04:33:23,160 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:23,161 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:33:23,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080114869] [2019-11-07 04:33:23,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:33:23,171 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:23,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:33:23,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:33:23,206 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 2 states. [2019-11-07 04:33:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:23,303 INFO L93 Difference]: Finished difference Result 263 states and 320 transitions. [2019-11-07 04:33:23,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:33:23,305 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-11-07 04:33:23,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:23,328 INFO L225 Difference]: With dead ends: 263 [2019-11-07 04:33:23,328 INFO L226 Difference]: Without dead ends: 132 [2019-11-07 04:33:23,336 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:33:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-07 04:33:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2019-11-07 04:33:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-07 04:33:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2019-11-07 04:33:23,421 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 42 [2019-11-07 04:33:23,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:23,422 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2019-11-07 04:33:23,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:33:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2019-11-07 04:33:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:33:23,429 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:23,429 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:33:23,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash -347093035, now seen corresponding path program 1 times [2019-11-07 04:33:23,430 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:23,430 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680534192] [2019-11-07 04:33:23,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:23,632 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680534192] [2019-11-07 04:33:23,632 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:23,632 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:33:23,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624916530] [2019-11-07 04:33:23,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:33:23,635 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:23,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:33:23,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:23,636 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 3 states. [2019-11-07 04:33:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:23,659 INFO L93 Difference]: Finished difference Result 211 states and 245 transitions. [2019-11-07 04:33:23,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:33:23,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-07 04:33:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:23,663 INFO L225 Difference]: With dead ends: 211 [2019-11-07 04:33:23,663 INFO L226 Difference]: Without dead ends: 124 [2019-11-07 04:33:23,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-11-07 04:33:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-11-07 04:33:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-07 04:33:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2019-11-07 04:33:23,679 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 43 [2019-11-07 04:33:23,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:23,680 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2019-11-07 04:33:23,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:33:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2019-11-07 04:33:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 04:33:23,682 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:23,682 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:33:23,683 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:23,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1786678085, now seen corresponding path program 1 times [2019-11-07 04:33:23,683 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:23,684 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962519248] [2019-11-07 04:33:23,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:23,862 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962519248] [2019-11-07 04:33:23,862 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:23,862 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:33:23,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781165360] [2019-11-07 04:33:23,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:33:23,863 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:23,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:33:23,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:33:23,865 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 7 states. [2019-11-07 04:33:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:24,429 INFO L93 Difference]: Finished difference Result 373 states and 445 transitions. [2019-11-07 04:33:24,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:33:24,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-11-07 04:33:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:24,440 INFO L225 Difference]: With dead ends: 373 [2019-11-07 04:33:24,442 INFO L226 Difference]: Without dead ends: 271 [2019-11-07 04:33:24,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:33:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-11-07 04:33:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 259. [2019-11-07 04:33:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-11-07 04:33:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 308 transitions. [2019-11-07 04:33:24,510 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 308 transitions. Word has length 47 [2019-11-07 04:33:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:24,511 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 308 transitions. [2019-11-07 04:33:24,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:33:24,511 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 308 transitions. [2019-11-07 04:33:24,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-07 04:33:24,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:24,513 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:33:24,514 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:24,514 INFO L82 PathProgramCache]: Analyzing trace with hash 78965688, now seen corresponding path program 1 times [2019-11-07 04:33:24,514 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:24,515 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396394015] [2019-11-07 04:33:24,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:24,645 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396394015] [2019-11-07 04:33:24,645 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:24,645 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:33:24,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747135228] [2019-11-07 04:33:24,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:33:24,646 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:24,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:33:24,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:33:24,647 INFO L87 Difference]: Start difference. First operand 259 states and 308 transitions. Second operand 10 states. [2019-11-07 04:33:25,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:25,405 INFO L93 Difference]: Finished difference Result 931 states and 1154 transitions. [2019-11-07 04:33:25,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:33:25,405 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-11-07 04:33:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:25,416 INFO L225 Difference]: With dead ends: 931 [2019-11-07 04:33:25,416 INFO L226 Difference]: Without dead ends: 694 [2019-11-07 04:33:25,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:33:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-11-07 04:33:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 670. [2019-11-07 04:33:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-11-07 04:33:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 815 transitions. [2019-11-07 04:33:25,521 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 815 transitions. Word has length 51 [2019-11-07 04:33:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:25,522 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 815 transitions. [2019-11-07 04:33:25,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:33:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 815 transitions. [2019-11-07 04:33:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 04:33:25,530 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:25,530 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:33:25,531 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:25,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1575812869, now seen corresponding path program 1 times [2019-11-07 04:33:25,531 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:25,532 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960658342] [2019-11-07 04:33:25,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:25,652 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960658342] [2019-11-07 04:33:25,653 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:25,653 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:33:25,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182501542] [2019-11-07 04:33:25,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:33:25,654 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:25,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:33:25,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:33:25,655 INFO L87 Difference]: Start difference. First operand 670 states and 815 transitions. Second operand 4 states. [2019-11-07 04:33:26,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:26,063 INFO L93 Difference]: Finished difference Result 1606 states and 2125 transitions. [2019-11-07 04:33:26,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:33:26,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2019-11-07 04:33:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:26,069 INFO L225 Difference]: With dead ends: 1606 [2019-11-07 04:33:26,070 INFO L226 Difference]: Without dead ends: 958 [2019-11-07 04:33:26,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:33:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2019-11-07 04:33:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 825. [2019-11-07 04:33:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2019-11-07 04:33:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 982 transitions. [2019-11-07 04:33:26,135 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 982 transitions. Word has length 57 [2019-11-07 04:33:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:26,135 INFO L462 AbstractCegarLoop]: Abstraction has 825 states and 982 transitions. [2019-11-07 04:33:26,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:33:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 982 transitions. [2019-11-07 04:33:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-07 04:33:26,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:26,138 INFO L410 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] [2019-11-07 04:33:26,139 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:26,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1436947575, now seen corresponding path program 1 times [2019-11-07 04:33:26,139 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:26,140 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902011204] [2019-11-07 04:33:26,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:33:26,270 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902011204] [2019-11-07 04:33:26,270 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543248632] [2019-11-07 04:33:26,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:33:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:26,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:33:26,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:33:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:33:26,529 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:33:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:33:26,646 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:33:26,646 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-11-07 04:33:26,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233004578] [2019-11-07 04:33:26,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:33:26,648 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:26,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:33:26,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:33:26,648 INFO L87 Difference]: Start difference. First operand 825 states and 982 transitions. Second operand 7 states. [2019-11-07 04:33:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:27,030 INFO L93 Difference]: Finished difference Result 838 states and 998 transitions. [2019-11-07 04:33:27,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:33:27,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2019-11-07 04:33:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:27,038 INFO L225 Difference]: With dead ends: 838 [2019-11-07 04:33:27,038 INFO L226 Difference]: Without dead ends: 835 [2019-11-07 04:33:27,039 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:33:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2019-11-07 04:33:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 825. [2019-11-07 04:33:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2019-11-07 04:33:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 979 transitions. [2019-11-07 04:33:27,102 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 979 transitions. Word has length 79 [2019-11-07 04:33:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:27,104 INFO L462 AbstractCegarLoop]: Abstraction has 825 states and 979 transitions. [2019-11-07 04:33:27,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:33:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 979 transitions. [2019-11-07 04:33:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-07 04:33:27,109 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:27,110 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:33:27,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:33:27,317 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1521573520, now seen corresponding path program 1 times [2019-11-07 04:33:27,317 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:27,318 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400670262] [2019-11-07 04:33:27,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:33:27,504 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400670262] [2019-11-07 04:33:27,504 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:27,505 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:33:27,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056462485] [2019-11-07 04:33:27,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:33:27,506 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:27,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:33:27,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:27,506 INFO L87 Difference]: Start difference. First operand 825 states and 979 transitions. Second operand 3 states. [2019-11-07 04:33:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:27,581 INFO L93 Difference]: Finished difference Result 1309 states and 1558 transitions. [2019-11-07 04:33:27,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:33:27,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-11-07 04:33:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:27,587 INFO L225 Difference]: With dead ends: 1309 [2019-11-07 04:33:27,588 INFO L226 Difference]: Without dead ends: 506 [2019-11-07 04:33:27,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2019-11-07 04:33:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 491. [2019-11-07 04:33:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-11-07 04:33:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 571 transitions. [2019-11-07 04:33:27,619 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 571 transitions. Word has length 106 [2019-11-07 04:33:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:27,619 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 571 transitions. [2019-11-07 04:33:27,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:33:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 571 transitions. [2019-11-07 04:33:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 04:33:27,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:27,623 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:33:27,623 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:27,623 INFO L82 PathProgramCache]: Analyzing trace with hash 436151440, now seen corresponding path program 1 times [2019-11-07 04:33:27,623 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:27,624 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259504747] [2019-11-07 04:33:27,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:33:27,749 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259504747] [2019-11-07 04:33:27,749 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039102112] [2019-11-07 04:33:27,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:33:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:28,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 04:33:28,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:33:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:33:28,101 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:33:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:33:28,383 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [196539036] [2019-11-07 04:33:28,413 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2019-11-07 04:33:28,413 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:33:28,421 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:33:28,428 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:33:28,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:33:36,904 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-11-07 04:33:38,645 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:33:38,776 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:38,927 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:39,085 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:39,365 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:33:39,488 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:39,612 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:39,929 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:33:39,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-11-07 04:33:39,955 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-11-07 04:33:40,354 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:40,582 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:40,882 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:41,027 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:41,166 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:41,382 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:41,495 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:41,610 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:41,746 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:41,851 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:42,018 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:42,186 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:42,378 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:42,488 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:42,639 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:42,754 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:42,864 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:42,987 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:43,132 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:43,241 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:43,363 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:43,469 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:43,577 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:43,717 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:43,879 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:33:43,986 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:33:44,119 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:33:44,227 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:33:44,346 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:33:44,495 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:33:44,665 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:33:44,784 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:33:44,932 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-11-07 04:33:45,043 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:33:45,181 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:33:45,299 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-11-07 04:33:45,319 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 544 for LOIs [2019-11-07 04:33:45,334 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 540 for LOIs [2019-11-07 04:33:45,345 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 540 for LOIs [2019-11-07 04:33:45,357 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 542 for LOIs [2019-11-07 04:33:45,583 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 555 [2019-11-07 04:33:46,372 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:47,113 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 571 [2019-11-07 04:33:47,593 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 593 DAG size of output: 591 [2019-11-07 04:33:47,714 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 591 [2019-11-07 04:33:47,897 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 597 [2019-11-07 04:33:48,094 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 592 [2019-11-07 04:33:48,552 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 593 [2019-11-07 04:33:49,067 WARN L191 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 594 DAG size of output: 594 [2019-11-07 04:33:49,608 WARN L191 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 599 [2019-11-07 04:33:50,494 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 605 [2019-11-07 04:33:50,633 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 605 [2019-11-07 04:33:50,794 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 619 DAG size of output: 619 [2019-11-07 04:33:51,000 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 621 [2019-11-07 04:33:51,210 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 04:33:51,337 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 04:33:51,545 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 619 DAG size of output: 619 [2019-11-07 04:33:51,681 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 612 [2019-11-07 04:33:51,816 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 612 [2019-11-07 04:33:51,991 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 620 DAG size of output: 620 [2019-11-07 04:33:52,123 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 612 [2019-11-07 04:33:52,259 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 612 [2019-11-07 04:33:52,422 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 620 DAG size of output: 620 [2019-11-07 04:33:53,039 WARN L191 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 620 DAG size of output: 618 [2019-11-07 04:33:53,230 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 574 for LOIs [2019-11-07 04:33:53,263 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 137 for LOIs [2019-11-07 04:33:54,415 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 141 for LOIs [2019-11-07 04:33:54,590 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 141 for LOIs [2019-11-07 04:33:54,594 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 137 for LOIs [2019-11-07 04:33:54,597 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 540 for LOIs [2019-11-07 04:33:54,606 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 534 for LOIs [2019-11-07 04:33:54,614 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 136 for LOIs [2019-11-07 04:33:54,741 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 136 for LOIs [2019-11-07 04:33:54,861 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 136 for LOIs [2019-11-07 04:33:55,402 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 134 for LOIs [2019-11-07 04:33:55,690 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 134 for LOIs [2019-11-07 04:33:55,693 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 141 for LOIs [2019-11-07 04:33:55,695 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:33:55,941 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184