java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:19:16,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:19:16,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:19:16,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:19:16,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:19:16,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:19:16,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:19:16,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:19:16,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:19:16,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:19:16,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:19:16,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:19:16,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:19:16,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:19:16,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:19:16,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:19:16,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:19:16,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:19:16,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:19:16,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:19:16,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:19:16,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:19:16,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:19:16,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:19:16,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:19:16,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:19:16,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:19:16,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:19:16,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:19:16,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:19:16,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:19:16,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:19:16,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:19:16,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:19:16,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:19:16,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:19:16,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:19:16,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:19:16,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:19:16,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:19:16,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:19:16,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:19:16,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:19:16,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:19:16,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:19:16,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:19:16,673 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:19:16,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:19:16,674 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:19:16,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:19:16,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:19:16,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:19:16,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:19:16,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:19:16,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:19:16,675 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:19:16,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:19:16,675 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:19:16,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:19:16,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:19:16,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:19:16,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:19:16,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:19:16,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:19:16,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:19:16,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:19:16,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:19:16,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:19:16,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:19:16,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:19:16,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:19:16,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:19:16,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:19:16,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:19:16,985 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:19:16,986 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:19:16,986 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-10-15 03:19:17,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05de39ec/0dc95bcf0e974e8da68488d43b779c6b/FLAG000c3d7db [2019-10-15 03:19:17,697 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:19:17,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-10-15 03:19:17,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05de39ec/0dc95bcf0e974e8da68488d43b779c6b/FLAG000c3d7db [2019-10-15 03:19:17,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05de39ec/0dc95bcf0e974e8da68488d43b779c6b [2019-10-15 03:19:17,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:19:17,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:19:17,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:19:17,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:19:17,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:19:17,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:19:17" (1/1) ... [2019-10-15 03:19:17,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419573bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:17, skipping insertion in model container [2019-10-15 03:19:17,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:19:17" (1/1) ... [2019-10-15 03:19:17,941 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:19:17,996 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:19:18,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:19:18,492 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:19:18,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:19:18,618 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:19:18,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18 WrapperNode [2019-10-15 03:19:18,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:19:18,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:19:18,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:19:18,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:19:18,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (1/1) ... [2019-10-15 03:19:18,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (1/1) ... [2019-10-15 03:19:18,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (1/1) ... [2019-10-15 03:19:18,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (1/1) ... [2019-10-15 03:19:18,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (1/1) ... [2019-10-15 03:19:18,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (1/1) ... [2019-10-15 03:19:18,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (1/1) ... [2019-10-15 03:19:18,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:19:18,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:19:18,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:19:18,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:19:18,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:19:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:19:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:19:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:19:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:19:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:19:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:19:18,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:19:18,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:19:18,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:19:18,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:19:18,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:19:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:19:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:19:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:19:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:19:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:19:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:19:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:19:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:19:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:19:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:19:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:19:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:19:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:19:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:19:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:19:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:19:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:19:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:19:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:19:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:19:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:19:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:19:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:19:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:19:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:19:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:19:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:19:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:19:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:19:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:19:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:19:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:19:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:19:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:19:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:19:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:19:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:19:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:19:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:19:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:19:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:19:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:19:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:19:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:19:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:19:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:19:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:19:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:19:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:19:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:19:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:19:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:19:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:19:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:19:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:19:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:19:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:19:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:19:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:19:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:19:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:19:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:19:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:19:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:19:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:19:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:19:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:19:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:19:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:19:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:19:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:19:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:19:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:19:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:19:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:19:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:19:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:19:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:19:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:19:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:19:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:19:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:19:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:19:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:19:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:19:18,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:19:18,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:19:20,491 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:19:20,491 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:19:20,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:19:20 BoogieIcfgContainer [2019-10-15 03:19:20,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:19:20,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:19:20,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:19:20,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:19:20,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:19:17" (1/3) ... [2019-10-15 03:19:20,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5dc0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:19:20, skipping insertion in model container [2019-10-15 03:19:20,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:18" (2/3) ... [2019-10-15 03:19:20,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5dc0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:19:20, skipping insertion in model container [2019-10-15 03:19:20,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:19:20" (3/3) ... [2019-10-15 03:19:20,504 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product59.cil.c [2019-10-15 03:19:20,515 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:19:20,524 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:19:20,538 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:19:20,567 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:19:20,567 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:19:20,567 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:19:20,567 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:19:20,568 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:19:20,568 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:19:20,568 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:19:20,568 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:19:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2019-10-15 03:19:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:19:20,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:20,622 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:20,627 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash 441270767, now seen corresponding path program 1 times [2019-10-15 03:19:20,645 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:20,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204233494] [2019-10-15 03:19:20,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:20,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:20,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:21,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204233494] [2019-10-15 03:19:21,084 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:21,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:19:21,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468713124] [2019-10-15 03:19:21,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:19:21,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:21,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:19:21,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:19:21,108 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 2 states. [2019-10-15 03:19:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:21,164 INFO L93 Difference]: Finished difference Result 247 states and 300 transitions. [2019-10-15 03:19:21,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:19:21,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:19:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:21,178 INFO L225 Difference]: With dead ends: 247 [2019-10-15 03:19:21,179 INFO L226 Difference]: Without dead ends: 124 [2019-10-15 03:19:21,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:19:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-10-15 03:19:21,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-10-15 03:19:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-15 03:19:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2019-10-15 03:19:21,243 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 42 [2019-10-15 03:19:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:21,244 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2019-10-15 03:19:21,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:19:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2019-10-15 03:19:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:19:21,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:21,249 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:21,249 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:21,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:21,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2060866146, now seen corresponding path program 1 times [2019-10-15 03:19:21,250 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:21,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185565196] [2019-10-15 03:19:21,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:21,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:21,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:21,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185565196] [2019-10-15 03:19:21,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:21,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:19:21,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907210462] [2019-10-15 03:19:21,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:19:21,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:21,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:19:21,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:19:21,388 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 3 states. [2019-10-15 03:19:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:21,436 INFO L93 Difference]: Finished difference Result 198 states and 228 transitions. [2019-10-15 03:19:21,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:19:21,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:19:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:21,443 INFO L225 Difference]: With dead ends: 198 [2019-10-15 03:19:21,443 INFO L226 Difference]: Without dead ends: 116 [2019-10-15 03:19:21,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:19:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-10-15 03:19:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2019-10-15 03:19:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-10-15 03:19:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2019-10-15 03:19:21,480 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 43 [2019-10-15 03:19:21,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:21,481 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2019-10-15 03:19:21,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:19:21,482 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2019-10-15 03:19:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:19:21,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:21,490 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:21,490 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:21,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1525287832, now seen corresponding path program 1 times [2019-10-15 03:19:21,491 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:21,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389825125] [2019-10-15 03:19:21,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:21,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:21,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:21,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389825125] [2019-10-15 03:19:21,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:21,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:19:21,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939632966] [2019-10-15 03:19:21,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:19:21,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:21,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:19:21,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:19:21,672 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 7 states. [2019-10-15 03:19:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:22,159 INFO L93 Difference]: Finished difference Result 348 states and 412 transitions. [2019-10-15 03:19:22,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:19:22,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-15 03:19:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:22,164 INFO L225 Difference]: With dead ends: 348 [2019-10-15 03:19:22,164 INFO L226 Difference]: Without dead ends: 254 [2019-10-15 03:19:22,166 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:19:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-10-15 03:19:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 246. [2019-10-15 03:19:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-10-15 03:19:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 291 transitions. [2019-10-15 03:19:22,202 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 291 transitions. Word has length 46 [2019-10-15 03:19:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:22,202 INFO L462 AbstractCegarLoop]: Abstraction has 246 states and 291 transitions. [2019-10-15 03:19:22,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:19:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 291 transitions. [2019-10-15 03:19:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 03:19:22,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:22,207 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:22,207 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:22,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:22,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1415175768, now seen corresponding path program 1 times [2019-10-15 03:19:22,208 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:22,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126516287] [2019-10-15 03:19:22,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:22,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:22,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:22,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126516287] [2019-10-15 03:19:22,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:22,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:19:22,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149244660] [2019-10-15 03:19:22,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:19:22,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:22,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:19:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:19:22,364 INFO L87 Difference]: Start difference. First operand 246 states and 291 transitions. Second operand 6 states. [2019-10-15 03:19:22,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:22,623 INFO L93 Difference]: Finished difference Result 679 states and 822 transitions. [2019-10-15 03:19:22,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:19:22,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2019-10-15 03:19:22,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:22,629 INFO L225 Difference]: With dead ends: 679 [2019-10-15 03:19:22,629 INFO L226 Difference]: Without dead ends: 455 [2019-10-15 03:19:22,630 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:19:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2019-10-15 03:19:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 443. [2019-10-15 03:19:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-10-15 03:19:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 528 transitions. [2019-10-15 03:19:22,702 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 528 transitions. Word has length 51 [2019-10-15 03:19:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:22,702 INFO L462 AbstractCegarLoop]: Abstraction has 443 states and 528 transitions. [2019-10-15 03:19:22,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:19:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 528 transitions. [2019-10-15 03:19:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-15 03:19:22,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:22,704 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:22,705 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:22,705 INFO L82 PathProgramCache]: Analyzing trace with hash 126265580, now seen corresponding path program 1 times [2019-10-15 03:19:22,705 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:22,706 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900914177] [2019-10-15 03:19:22,706 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:22,706 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:22,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:22,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900914177] [2019-10-15 03:19:22,836 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:22,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:19:22,836 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493803696] [2019-10-15 03:19:22,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:19:22,837 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:22,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:19:22,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:19:22,839 INFO L87 Difference]: Start difference. First operand 443 states and 528 transitions. Second operand 7 states. [2019-10-15 03:19:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:23,460 INFO L93 Difference]: Finished difference Result 1159 states and 1498 transitions. [2019-10-15 03:19:23,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:19:23,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2019-10-15 03:19:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:23,466 INFO L225 Difference]: With dead ends: 1159 [2019-10-15 03:19:23,466 INFO L226 Difference]: Without dead ends: 738 [2019-10-15 03:19:23,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:19:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-15 03:19:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 651. [2019-10-15 03:19:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-15 03:19:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 777 transitions. [2019-10-15 03:19:23,522 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 777 transitions. Word has length 54 [2019-10-15 03:19:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:23,522 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 777 transitions. [2019-10-15 03:19:23,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:19:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 777 transitions. [2019-10-15 03:19:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-15 03:19:23,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:23,525 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:23,525 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:23,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1698994446, now seen corresponding path program 1 times [2019-10-15 03:19:23,526 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:23,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645442860] [2019-10-15 03:19:23,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:23,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:23,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:19:23,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645442860] [2019-10-15 03:19:23,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473922165] [2019-10-15 03:19:23,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:23,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 03:19:23,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:19:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:24,064 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:19:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:19:24,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:19:24,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 11] total 23 [2019-10-15 03:19:24,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257334381] [2019-10-15 03:19:24,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:19:24,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:24,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:19:24,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:19:24,693 INFO L87 Difference]: Start difference. First operand 651 states and 777 transitions. Second operand 11 states. [2019-10-15 03:19:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:25,398 INFO L93 Difference]: Finished difference Result 1561 states and 1945 transitions. [2019-10-15 03:19:25,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:19:25,399 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2019-10-15 03:19:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:25,407 INFO L225 Difference]: With dead ends: 1561 [2019-10-15 03:19:25,407 INFO L226 Difference]: Without dead ends: 932 [2019-10-15 03:19:25,410 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2019-10-15 03:19:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2019-10-15 03:19:25,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 912. [2019-10-15 03:19:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-10-15 03:19:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1100 transitions. [2019-10-15 03:19:25,482 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1100 transitions. Word has length 84 [2019-10-15 03:19:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:25,483 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1100 transitions. [2019-10-15 03:19:25,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:19:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1100 transitions. [2019-10-15 03:19:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 03:19:25,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:25,490 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:25,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:25,696 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash 771422798, now seen corresponding path program 1 times [2019-10-15 03:19:25,698 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:25,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126107749] [2019-10-15 03:19:25,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:25,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:25,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:19:25,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126107749] [2019-10-15 03:19:25,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144979514] [2019-10-15 03:19:25,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:26,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:19:26,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:19:26,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:26,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:26,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:19:26,520 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:19:27,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:27,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:27,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:27,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:19:28,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:19:28,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-15 03:19:28,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275840142] [2019-10-15 03:19:28,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:19:28,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:28,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:19:28,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:19:28,183 INFO L87 Difference]: Start difference. First operand 912 states and 1100 transitions. Second operand 14 states. [2019-10-15 03:19:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:30,674 INFO L93 Difference]: Finished difference Result 2610 states and 3289 transitions. [2019-10-15 03:19:30,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-15 03:19:30,675 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2019-10-15 03:19:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:30,691 INFO L225 Difference]: With dead ends: 2610 [2019-10-15 03:19:30,691 INFO L226 Difference]: Without dead ends: 1720 [2019-10-15 03:19:30,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 237 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-10-15 03:19:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2019-10-15 03:19:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1610. [2019-10-15 03:19:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2019-10-15 03:19:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1962 transitions. [2019-10-15 03:19:30,831 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1962 transitions. Word has length 130 [2019-10-15 03:19:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:30,834 INFO L462 AbstractCegarLoop]: Abstraction has 1610 states and 1962 transitions. [2019-10-15 03:19:30,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:19:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1962 transitions. [2019-10-15 03:19:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:19:30,844 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:30,845 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:31,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:31,059 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:31,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2104519869, now seen corresponding path program 1 times [2019-10-15 03:19:31,060 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:31,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895860918] [2019-10-15 03:19:31,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:31,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:31,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:19:31,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895860918] [2019-10-15 03:19:31,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068081907] [2019-10-15 03:19:31,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:31,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-15 03:19:31,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:19:31,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:31,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:19:32,005 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:19:32,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:19:32,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934822741] [2019-10-15 03:19:32,986 INFO L162 IcfgInterpreter]: Started Sifa with 106 locations of interest [2019-10-15 03:19:32,986 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:19:32,993 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:19:33,000 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:19:33,000 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:19:42,790 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:19:44,449 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:19:44,625 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:19:44,810 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:19:45,017 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:19:45,468 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:45,733 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,017 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,278 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,668 WARN L191 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:19:46,855 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:47,111 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:47,248 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:47,375 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:47,497 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:47,505 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:19:47,755 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-15 03:19:47,755 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-15 03:19:47,868 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:47,977 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:48,106 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:48,226 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:48,377 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:48,515 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:48,640 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:48,860 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:49,147 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-15 03:19:49,373 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:49,482 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:49,584 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:49,725 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:49,853 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:49,956 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:50,095 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:50,210 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:50,444 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:50,571 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:50,673 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:50,792 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:51,110 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:51,213 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:51,332 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:51,449 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:51,768 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,106 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,228 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:52,331 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:52,451 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,652 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,842 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,036 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,164 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,289 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,437 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,547 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,660 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,786 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,916 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,045 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,168 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,321 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,447 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,573 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,685 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,797 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,918 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:55,052 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:19:55,164 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:19:55,295 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:55,420 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:55,533 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:55,664 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:19:55,793 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:55,908 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:56,036 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:19:56,264 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 564 DAG size of output: 560 [2019-10-15 03:19:56,382 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:56,554 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:19:56,666 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:56,779 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:56,903 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 562