/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_spec5_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:35:47,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:35:47,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:35:47,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:35:47,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:35:47,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:35:47,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:35:47,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:35:47,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:35:47,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:35:47,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:35:47,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:35:47,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:35:47,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:35:47,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:35:47,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:35:47,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:35:47,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:35:47,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:35:47,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:35:47,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:35:47,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:35:47,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:35:47,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:35:47,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:35:47,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:35:47,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:35:47,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:35:47,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:35:47,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:35:47,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:35:47,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:35:47,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:35:47,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:35:47,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:35:47,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:35:47,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:35:47,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:35:47,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:35:47,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:35:47,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:35:47,829 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 04:35:47,850 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:35:47,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:35:47,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:35:47,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:35:47,852 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:35:47,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:35:47,853 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:35:47,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:35:47,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:35:47,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:35:47,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:35:47,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:35:47,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:35:47,855 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:35:47,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:35:47,856 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:35:47,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:35:47,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:35:47,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:35:47,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:35:47,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:35:47,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:35:47,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:35:47,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:35:47,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:35:47,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:35:47,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:35:47,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:35:47,858 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 04:35:48,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:35:48,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:35:48,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:35:48,140 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:35:48,140 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:35:48,141 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c [2019-11-07 04:35:48,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d5adc5b/6c17aaca2ebc4931acf8f51a92197b42/FLAG0d59741b8 [2019-11-07 04:35:48,780 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:35:48,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c [2019-11-07 04:35:48,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d5adc5b/6c17aaca2ebc4931acf8f51a92197b42/FLAG0d59741b8 [2019-11-07 04:35:49,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d5adc5b/6c17aaca2ebc4931acf8f51a92197b42 [2019-11-07 04:35:49,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:35:49,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:35:49,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:35:49,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:35:49,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:35:49,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62394d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49, skipping insertion in model container [2019-11-07 04:35:49,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,069 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:35:49,130 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:35:49,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:35:49,591 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:35:49,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:35:49,731 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:35:49,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49 WrapperNode [2019-11-07 04:35:49,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:35:49,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:35:49,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:35:49,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:35:49,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (1/1) ... [2019-11-07 04:35:49,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:35:49,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:35:49,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:35:49,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:35:49,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (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 04:35:49,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:35:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:35:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:35:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:35:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:35:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:35:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:35:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:35:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:35:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:35:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:35:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:35:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:35:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:35:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:35:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:35:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:35:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:35:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:35:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:35:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:35:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:35:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:35:49,951 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:35:49,951 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:35:49,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:35:49,951 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:35:49,951 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:35:49,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:35:49,952 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:35:49,952 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:35:49,952 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:35:49,952 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:35:49,952 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-11-07 04:35:49,952 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:35:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:35:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:35:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:35:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:35:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:35:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:35:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:35:49,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:35:49,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:35:49,955 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:35:49,955 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:35:49,955 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:35:49,956 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:35:49,956 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:35:49,956 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:35:49,956 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:35:49,956 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:35:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:35:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:35:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:35:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:35:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:35:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:35:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:35:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:35:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:35:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:35:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:35:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:35:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:35:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:35:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:35:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:35:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:35:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:35:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:35:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:35:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:35:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:35:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:35:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:35:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:35:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:35:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:35:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:35:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:35:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:35:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:35:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:35:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:35:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-11-07 04:35:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:35:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:35:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:35:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:35:51,629 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:35:51,629 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:35:51,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:35:51 BoogieIcfgContainer [2019-11-07 04:35:51,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:35:51,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:35:51,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:35:51,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:35:51,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:35:49" (1/3) ... [2019-11-07 04:35:51,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd72a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:35:51, skipping insertion in model container [2019-11-07 04:35:51,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:49" (2/3) ... [2019-11-07 04:35:51,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd72a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:35:51, skipping insertion in model container [2019-11-07 04:35:51,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:35:51" (3/3) ... [2019-11-07 04:35:51,640 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product42.cil.c [2019-11-07 04:35:51,650 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:35:51,661 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:35:51,673 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:35:51,701 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:35:51,701 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:35:51,702 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:35:51,702 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:35:51,702 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:35:51,702 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:35:51,703 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:35:51,703 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:35:51,726 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2019-11-07 04:35:51,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-07 04:35:51,737 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:51,738 INFO L410 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] [2019-11-07 04:35:51,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:51,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1536710141, now seen corresponding path program 1 times [2019-11-07 04:35:51,758 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:51,759 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369586769] [2019-11-07 04:35:51,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:52,105 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369586769] [2019-11-07 04:35:52,106 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:52,106 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:35:52,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109798725] [2019-11-07 04:35:52,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:35:52,113 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:52,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:35:52,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:35:52,130 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 2 states. [2019-11-07 04:35:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:52,197 INFO L93 Difference]: Finished difference Result 222 states and 265 transitions. [2019-11-07 04:35:52,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:35:52,199 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-11-07 04:35:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:52,212 INFO L225 Difference]: With dead ends: 222 [2019-11-07 04:35:52,212 INFO L226 Difference]: Without dead ends: 113 [2019-11-07 04:35:52,219 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 04:35:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-07 04:35:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-11-07 04:35:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-11-07 04:35:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2019-11-07 04:35:52,281 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 52 [2019-11-07 04:35:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:52,282 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2019-11-07 04:35:52,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:35:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2019-11-07 04:35:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-07 04:35:52,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:52,286 INFO L410 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] [2019-11-07 04:35:52,287 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:52,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1784540898, now seen corresponding path program 1 times [2019-11-07 04:35:52,288 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:52,288 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495755790] [2019-11-07 04:35:52,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:52,438 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495755790] [2019-11-07 04:35:52,439 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:52,439 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:35:52,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227637514] [2019-11-07 04:35:52,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:35:52,442 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:52,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:35:52,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:35:52,443 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand 3 states. [2019-11-07 04:35:52,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:52,469 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions. [2019-11-07 04:35:52,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:35:52,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-11-07 04:35:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:52,472 INFO L225 Difference]: With dead ends: 176 [2019-11-07 04:35:52,472 INFO L226 Difference]: Without dead ends: 105 [2019-11-07 04:35:52,474 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 04:35:52,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-07 04:35:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-11-07 04:35:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-07 04:35:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2019-11-07 04:35:52,488 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 53 [2019-11-07 04:35:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:52,489 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2019-11-07 04:35:52,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:35:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2019-11-07 04:35:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 04:35:52,492 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:52,492 INFO L410 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] [2019-11-07 04:35:52,492 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:52,493 INFO L82 PathProgramCache]: Analyzing trace with hash -726809232, now seen corresponding path program 1 times [2019-11-07 04:35:52,493 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:52,493 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672864642] [2019-11-07 04:35:52,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:52,744 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672864642] [2019-11-07 04:35:52,744 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:52,744 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:35:52,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392499578] [2019-11-07 04:35:52,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:35:52,747 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:52,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:35:52,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:35:52,748 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 7 states. [2019-11-07 04:35:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:53,046 INFO L93 Difference]: Finished difference Result 185 states and 210 transitions. [2019-11-07 04:35:53,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:35:53,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-07 04:35:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:53,048 INFO L225 Difference]: With dead ends: 185 [2019-11-07 04:35:53,049 INFO L226 Difference]: Without dead ends: 105 [2019-11-07 04:35:53,050 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 04:35:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-07 04:35:53,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-11-07 04:35:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-07 04:35:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2019-11-07 04:35:53,065 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 56 [2019-11-07 04:35:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:53,067 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2019-11-07 04:35:53,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:35:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2019-11-07 04:35:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-07 04:35:53,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:53,070 INFO L410 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] [2019-11-07 04:35:53,071 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:53,071 INFO L82 PathProgramCache]: Analyzing trace with hash -334964111, now seen corresponding path program 1 times [2019-11-07 04:35:53,071 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:53,072 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715283290] [2019-11-07 04:35:53,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:53,231 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715283290] [2019-11-07 04:35:53,231 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:53,231 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:35:53,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096923909] [2019-11-07 04:35:53,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:35:53,232 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:53,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:35:53,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:35:53,233 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand 5 states. [2019-11-07 04:35:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:53,684 INFO L93 Difference]: Finished difference Result 270 states and 316 transitions. [2019-11-07 04:35:53,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:35:53,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-11-07 04:35:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:53,689 INFO L225 Difference]: With dead ends: 270 [2019-11-07 04:35:53,690 INFO L226 Difference]: Without dead ends: 190 [2019-11-07 04:35:53,693 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:35:53,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2019-11-07 04:35:53,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2019-11-07 04:35:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-11-07 04:35:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2019-11-07 04:35:53,741 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 64 [2019-11-07 04:35:53,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:53,742 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2019-11-07 04:35:53,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:35:53,742 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2019-11-07 04:35:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:35:53,744 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:53,745 INFO L410 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] [2019-11-07 04:35:53,745 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash -574106843, now seen corresponding path program 1 times [2019-11-07 04:35:53,745 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:53,745 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938327304] [2019-11-07 04:35:53,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:35:53,909 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938327304] [2019-11-07 04:35:53,909 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:53,909 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:35:53,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56887371] [2019-11-07 04:35:53,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:35:53,912 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:53,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:35:53,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:35:53,913 INFO L87 Difference]: Start difference. First operand 173 states and 194 transitions. Second operand 7 states. [2019-11-07 04:35:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:54,484 INFO L93 Difference]: Finished difference Result 337 states and 390 transitions. [2019-11-07 04:35:54,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:35:54,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2019-11-07 04:35:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:54,491 INFO L225 Difference]: With dead ends: 337 [2019-11-07 04:35:54,491 INFO L226 Difference]: Without dead ends: 189 [2019-11-07 04:35:54,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:35:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-11-07 04:35:54,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 172. [2019-11-07 04:35:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-07 04:35:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 191 transitions. [2019-11-07 04:35:54,517 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 191 transitions. Word has length 73 [2019-11-07 04:35:54,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:54,517 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 191 transitions. [2019-11-07 04:35:54,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:35:54,517 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 191 transitions. [2019-11-07 04:35:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-07 04:35:54,521 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:54,521 INFO L410 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, 1] [2019-11-07 04:35:54,522 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:54,522 INFO L82 PathProgramCache]: Analyzing trace with hash 158832633, now seen corresponding path program 1 times [2019-11-07 04:35:54,522 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:54,523 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893671185] [2019-11-07 04:35:54,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:54,787 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893671185] [2019-11-07 04:35:54,788 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:54,789 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:35:54,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080523266] [2019-11-07 04:35:54,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:35:54,790 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:54,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:35:54,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:35:54,790 INFO L87 Difference]: Start difference. First operand 172 states and 191 transitions. Second operand 12 states. [2019-11-07 04:35:55,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:55,573 INFO L93 Difference]: Finished difference Result 458 states and 526 transitions. [2019-11-07 04:35:55,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 04:35:55,575 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2019-11-07 04:35:55,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:55,579 INFO L225 Difference]: With dead ends: 458 [2019-11-07 04:35:55,579 INFO L226 Difference]: Without dead ends: 311 [2019-11-07 04:35:55,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:35:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2019-11-07 04:35:55,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 302. [2019-11-07 04:35:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2019-11-07 04:35:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 344 transitions. [2019-11-07 04:35:55,610 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 344 transitions. Word has length 86 [2019-11-07 04:35:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:55,611 INFO L462 AbstractCegarLoop]: Abstraction has 302 states and 344 transitions. [2019-11-07 04:35:55,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:35:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 344 transitions. [2019-11-07 04:35:55,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-07 04:35:55,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:55,613 INFO L410 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, 1, 1, 1, 1] [2019-11-07 04:35:55,613 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:55,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1598295685, now seen corresponding path program 1 times [2019-11-07 04:35:55,614 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:55,614 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880530931] [2019-11-07 04:35:55,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:55,743 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880530931] [2019-11-07 04:35:55,743 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:55,743 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:35:55,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118488798] [2019-11-07 04:35:55,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:35:55,745 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:55,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:35:55,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:35:55,745 INFO L87 Difference]: Start difference. First operand 302 states and 344 transitions. Second operand 9 states. [2019-11-07 04:35:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:56,562 INFO L93 Difference]: Finished difference Result 940 states and 1100 transitions. [2019-11-07 04:35:56,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:35:56,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2019-11-07 04:35:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:56,568 INFO L225 Difference]: With dead ends: 940 [2019-11-07 04:35:56,569 INFO L226 Difference]: Without dead ends: 719 [2019-11-07 04:35:56,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:35:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2019-11-07 04:35:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 619. [2019-11-07 04:35:56,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-11-07 04:35:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 711 transitions. [2019-11-07 04:35:56,620 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 711 transitions. Word has length 89 [2019-11-07 04:35:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:56,621 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 711 transitions. [2019-11-07 04:35:56,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:35:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 711 transitions. [2019-11-07 04:35:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 04:35:56,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:56,623 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:35:56,624 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:56,624 INFO L82 PathProgramCache]: Analyzing trace with hash 30443821, now seen corresponding path program 1 times [2019-11-07 04:35:56,624 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:56,625 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298864908] [2019-11-07 04:35:56,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 04:35:56,758 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298864908] [2019-11-07 04:35:56,759 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976755441] [2019-11-07 04:35:56,759 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 04:35:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:56,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 04:35:57,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:35:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:35:57,170 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:35:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 04:35:57,610 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1146442063] [2019-11-07 04:35:57,641 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2019-11-07 04:35:57,641 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:35:57,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:35:57,655 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:35:57,655 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:36:06,506 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-07 04:36:08,369 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:36:08,531 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:08,701 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:08,897 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:09,204 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:36:09,318 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:09,434 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:36:09,641 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:36:09,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-11-07 04:36:09,669 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-11-07 04:36:09,906 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:10,019 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:10,230 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:10,340 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:10,586 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:10,699 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:10,933 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:11,129 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:11,241 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:36:11,398 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:11,570 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:11,712 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:11,852 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:11,962 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:12,096 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:12,217 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:12,371 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:12,484 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:12,688 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:12,818 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:12,933 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:13,066 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:13,216 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:36:13,387 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:36:13,525 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:36:13,640 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:36:13,785 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:36:13,908 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:36:14,093 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:36:14,283 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:36:14,451 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:36:14,574 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:36:14,747 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:36:14,878 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:36:14,898 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 548 for LOIs [2019-11-07 04:36:15,047 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:36:15,312 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:15,419 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:36:15,547 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:36:15,666 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:15,675 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 550 for LOIs [2019-11-07 04:36:15,943 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:36:16,383 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:16,851 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 579 [2019-11-07 04:36:16,976 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:36:17,251 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:17,700 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 579 [2019-11-07 04:36:17,860 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:36:18,137 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:36:18,494 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 579 [2019-11-07 04:36:19,170 WARN L191 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:36:19,912 WARN L191 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:36:20,528 WARN L191 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:36:21,097 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-11-07 04:36:21,238 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 205 [2019-11-07 04:36:21,449 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2019-11-07 04:36:21,817 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2019-11-07 04:36:22,098 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-07 04:36:22,259 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-07 04:36:22,368 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 187 [2019-11-07 04:36:22,523 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2019-11-07 04:36:22,908 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 187 [2019-11-07 04:36:23,034 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 191 [2019-11-07 04:36:23,380 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 626 DAG size of output: 626 [2019-11-07 04:36:23,970 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 605 [2019-11-07 04:36:24,167 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 605 [2019-11-07 04:36:24,380 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 615 [2019-11-07 04:36:24,545 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 606 [2019-11-07 04:36:24,678 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 606 [2019-11-07 04:36:24,869 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 616 [2019-11-07 04:36:25,002 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 606 [2019-11-07 04:36:25,141 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 606 [2019-11-07 04:36:25,317 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 616 [2019-11-07 04:36:25,728 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 619 DAG size of output: 619 [2019-11-07 04:36:26,120 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 619 DAG size of output: 619