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_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:19:04,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:19:04,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:19:04,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:19:04,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:19:04,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:19:04,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:19:04,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:19:04,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:19:04,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:19:04,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:19:04,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:19:04,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:19:04,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:19:04,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:19:04,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:19:04,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:19:04,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:19:04,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:19:04,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:19:04,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:19:04,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:19:04,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:19:04,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:19:04,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:19:04,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:19:04,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:19:04,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:19:04,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:19:04,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:19:04,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:19:04,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:19:04,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:19:04,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:19:04,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:19:04,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:19:04,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:19:04,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:19:04,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:19:04,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:19:04,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:19:04,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:19:04,538 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:19:04,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:19:04,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:19:04,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:19:04,540 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:19:04,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:19:04,546 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:19:04,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:19:04,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:19:04,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:19:04,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:19:04,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:19:04,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:19:04,548 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:19:04,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:19:04,548 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:19:04,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:19:04,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:19:04,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:19:04,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:19:04,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:19:04,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:19:04,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:19:04,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:19:04,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:19:04,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:19:04,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:19:04,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:19:04,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:19:04,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:19:04,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:19:04,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:19:04,841 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:19:04,841 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:19:04,842 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-10-13 23:19:04,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11381740/a91f4416f0ed4904ac4a7de1aad45229/FLAGb1782d361 [2019-10-13 23:19:05,432 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:19:05,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-10-13 23:19:05,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11381740/a91f4416f0ed4904ac4a7de1aad45229/FLAGb1782d361 [2019-10-13 23:19:05,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11381740/a91f4416f0ed4904ac4a7de1aad45229 [2019-10-13 23:19:05,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:19:05,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:19:05,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:19:05,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:19:05,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:19:05,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:19:05" (1/1) ... [2019-10-13 23:19:05,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d46bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:05, skipping insertion in model container [2019-10-13 23:19:05,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:19:05" (1/1) ... [2019-10-13 23:19:05,757 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:19:05,810 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:19:06,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:19:06,304 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:19:06,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:19:06,447 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:19:06,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06 WrapperNode [2019-10-13 23:19:06,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:19:06,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:19:06,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:19:06,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:19:06,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:19:06,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:19:06,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:19:06,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:19:06,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:19:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:19:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:19:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:19:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:19:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:19:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:19:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:19:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:19:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:19:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:19:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:19:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:19:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:19:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:19:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:19:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:19:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:19:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:19:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:19:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:19:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:19:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:19:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:19:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:19:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:19:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:19:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:19:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:19:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:19:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:19:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:19:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:19:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:19:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:19:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:19:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:19:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:19:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:19:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:19:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:19:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:19:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:19:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:19:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:19:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:19:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:19:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:19:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:19:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:19:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:19:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:19:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:19:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:19:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:19:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:19:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:19:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:19:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:19:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:19:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:19:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:19:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:19:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:19:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:19:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:19:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:19:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:19:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:19:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:19:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:19:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:19:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:19:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:19:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:19:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:19:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:19:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:19:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:19:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:19:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:19:08,172 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:19:08,172 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:19:08,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:19:08 BoogieIcfgContainer [2019-10-13 23:19:08,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:19:08,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:19:08,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:19:08,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:19:08,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:19:05" (1/3) ... [2019-10-13 23:19:08,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e19f960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:19:08, skipping insertion in model container [2019-10-13 23:19:08,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (2/3) ... [2019-10-13 23:19:08,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e19f960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:19:08, skipping insertion in model container [2019-10-13 23:19:08,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:19:08" (3/3) ... [2019-10-13 23:19:08,183 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2019-10-13 23:19:08,193 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:19:08,202 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:19:08,213 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:19:08,263 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:19:08,263 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:19:08,264 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:19:08,264 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:19:08,265 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:19:08,265 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:19:08,266 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:19:08,267 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:19:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-10-13 23:19:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:19:08,315 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:08,317 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] [2019-10-13 23:19:08,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:08,328 INFO L82 PathProgramCache]: Analyzing trace with hash 616175143, now seen corresponding path program 1 times [2019-10-13 23:19:08,342 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:08,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910025240] [2019-10-13 23:19:08,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:08,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:08,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:08,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910025240] [2019-10-13 23:19:08,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:08,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:19:08,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518455087] [2019-10-13 23:19:08,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:19:08,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:08,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:19:08,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:19:08,797 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-10-13 23:19:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:08,843 INFO L93 Difference]: Finished difference Result 264 states and 319 transitions. [2019-10-13 23:19:08,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:19:08,845 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:19:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:08,860 INFO L225 Difference]: With dead ends: 264 [2019-10-13 23:19:08,861 INFO L226 Difference]: Without dead ends: 134 [2019-10-13 23:19:08,873 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:19:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-10-13 23:19:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-10-13 23:19:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-13 23:19:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2019-10-13 23:19:08,965 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 52 [2019-10-13 23:19:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:08,966 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2019-10-13 23:19:08,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:19:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2019-10-13 23:19:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:19:08,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:08,978 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] [2019-10-13 23:19:08,978 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:08,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1765384496, now seen corresponding path program 1 times [2019-10-13 23:19:08,980 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:08,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755476613] [2019-10-13 23:19:08,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:08,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:08,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:09,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755476613] [2019-10-13 23:19:09,199 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:09,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:19:09,200 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118271665] [2019-10-13 23:19:09,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:19:09,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:09,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:19:09,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:19:09,206 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand 3 states. [2019-10-13 23:19:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:09,250 INFO L93 Difference]: Finished difference Result 215 states and 247 transitions. [2019-10-13 23:19:09,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:19:09,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:19:09,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:09,255 INFO L225 Difference]: With dead ends: 215 [2019-10-13 23:19:09,256 INFO L226 Difference]: Without dead ends: 126 [2019-10-13 23:19:09,260 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:19:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-13 23:19:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-13 23:19:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-13 23:19:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2019-10-13 23:19:09,291 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 53 [2019-10-13 23:19:09,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:09,291 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2019-10-13 23:19:09,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:19:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2019-10-13 23:19:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 23:19:09,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:09,296 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] [2019-10-13 23:19:09,297 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:09,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:09,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1982343881, now seen corresponding path program 1 times [2019-10-13 23:19:09,297 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:09,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481912832] [2019-10-13 23:19:09,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:09,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:09,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:09,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481912832] [2019-10-13 23:19:09,486 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:09,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:19:09,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80359507] [2019-10-13 23:19:09,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:19:09,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:09,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:19:09,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:19:09,488 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 7 states. [2019-10-13 23:19:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:10,034 INFO L93 Difference]: Finished difference Result 377 states and 446 transitions. [2019-10-13 23:19:10,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:19:10,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-13 23:19:10,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:10,039 INFO L225 Difference]: With dead ends: 377 [2019-10-13 23:19:10,040 INFO L226 Difference]: Without dead ends: 276 [2019-10-13 23:19:10,041 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:19:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-10-13 23:19:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 268. [2019-10-13 23:19:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-13 23:19:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 317 transitions. [2019-10-13 23:19:10,074 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 317 transitions. Word has length 56 [2019-10-13 23:19:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:10,075 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 317 transitions. [2019-10-13 23:19:10,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:19:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 317 transitions. [2019-10-13 23:19:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 23:19:10,077 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:10,077 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] [2019-10-13 23:19:10,077 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:10,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1295801906, now seen corresponding path program 1 times [2019-10-13 23:19:10,078 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:10,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871457317] [2019-10-13 23:19:10,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:10,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:10,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:19:10,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871457317] [2019-10-13 23:19:10,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:10,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:19:10,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82335659] [2019-10-13 23:19:10,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:19:10,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:10,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:19:10,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:19:10,187 INFO L87 Difference]: Start difference. First operand 268 states and 317 transitions. Second operand 7 states. [2019-10-13 23:19:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:10,947 INFO L93 Difference]: Finished difference Result 680 states and 874 transitions. [2019-10-13 23:19:10,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:19:10,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-13 23:19:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:10,954 INFO L225 Difference]: With dead ends: 680 [2019-10-13 23:19:10,954 INFO L226 Difference]: Without dead ends: 437 [2019-10-13 23:19:10,955 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:19:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-10-13 23:19:10,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 387. [2019-10-13 23:19:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-10-13 23:19:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 458 transitions. [2019-10-13 23:19:11,001 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 458 transitions. Word has length 61 [2019-10-13 23:19:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:11,002 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 458 transitions. [2019-10-13 23:19:11,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:19:11,002 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 458 transitions. [2019-10-13 23:19:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 23:19:11,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:11,004 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:11,004 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash 601919314, now seen corresponding path program 1 times [2019-10-13 23:19:11,005 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:11,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343429450] [2019-10-13 23:19:11,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:11,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:11,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:11,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343429450] [2019-10-13 23:19:11,258 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:11,258 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:19:11,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191088003] [2019-10-13 23:19:11,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:19:11,260 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:11,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:19:11,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:19:11,260 INFO L87 Difference]: Start difference. First operand 387 states and 458 transitions. Second operand 12 states. [2019-10-13 23:19:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:12,239 INFO L93 Difference]: Finished difference Result 1149 states and 1406 transitions. [2019-10-13 23:19:12,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:19:12,240 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-13 23:19:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:12,246 INFO L225 Difference]: With dead ends: 1149 [2019-10-13 23:19:12,246 INFO L226 Difference]: Without dead ends: 787 [2019-10-13 23:19:12,248 INFO L600 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 [2019-10-13 23:19:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2019-10-13 23:19:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 765. [2019-10-13 23:19:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2019-10-13 23:19:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 926 transitions. [2019-10-13 23:19:12,306 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 926 transitions. Word has length 91 [2019-10-13 23:19:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:12,307 INFO L462 AbstractCegarLoop]: Abstraction has 765 states and 926 transitions. [2019-10-13 23:19:12,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:19:12,307 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 926 transitions. [2019-10-13 23:19:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 23:19:12,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:12,310 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:12,310 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:12,311 INFO L82 PathProgramCache]: Analyzing trace with hash -335301184, now seen corresponding path program 1 times [2019-10-13 23:19:12,311 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:12,311 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962126005] [2019-10-13 23:19:12,311 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:12,312 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:12,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:12,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962126005] [2019-10-13 23:19:12,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:12,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:19:12,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830430513] [2019-10-13 23:19:12,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:19:12,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:19:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:19:12,502 INFO L87 Difference]: Start difference. First operand 765 states and 926 transitions. Second operand 9 states. [2019-10-13 23:19:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:13,604 INFO L93 Difference]: Finished difference Result 2465 states and 3093 transitions. [2019-10-13 23:19:13,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:19:13,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2019-10-13 23:19:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:13,620 INFO L225 Difference]: With dead ends: 2465 [2019-10-13 23:19:13,620 INFO L226 Difference]: Without dead ends: 1884 [2019-10-13 23:19:13,623 INFO L600 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 [2019-10-13 23:19:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2019-10-13 23:19:13,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1610. [2019-10-13 23:19:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2019-10-13 23:19:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1968 transitions. [2019-10-13 23:19:13,738 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1968 transitions. Word has length 94 [2019-10-13 23:19:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:13,739 INFO L462 AbstractCegarLoop]: Abstraction has 1610 states and 1968 transitions. [2019-10-13 23:19:13,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:19:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1968 transitions. [2019-10-13 23:19:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 23:19:13,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:13,743 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:19:13,744 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash 945574640, now seen corresponding path program 1 times [2019-10-13 23:19:13,744 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:13,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616694463] [2019-10-13 23:19:13,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:13,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:13,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:19:13,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616694463] [2019-10-13 23:19:13,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431293562] [2019-10-13 23:19:13,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:19:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:14,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:19:14,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:19:14,430 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:19:14,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1838839928] [2019-10-13 23:19:14,848 INFO L162 IcfgInterpreter]: Started Sifa with 113 locations of interest [2019-10-13 23:19:14,848 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:14,855 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:14,866 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:14,867 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:24,814 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:26,500 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:26,627 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:26,765 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:26,891 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:27,187 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:27,408 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:27,604 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:27,798 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,003 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,118 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,263 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,399 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,505 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,634 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,643 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:19:28,961 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:19:28,962 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:19:29,178 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,286 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,442 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,574 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,729 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,860 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,984 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:30,091 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:30,221 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,548 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-13 23:19:30,668 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:30,816 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,942 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:31,066 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:31,188 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,300 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:31,431 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:31,559 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,765 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:31,901 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:32,215 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:32,534 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:32,841 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:33,167 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:33,285 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:33,499 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:33,710 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:33,833 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,000 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,123 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,282 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,424 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,533 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,661 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,770 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,882 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:35,030 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:35,181 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:35,291 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:35,415 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:35,535 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:35,650 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:35,776 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:35,994 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:36,120 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:36,242 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:36,356 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:36,466 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:36,596 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:36,709 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:36,822 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:36,972 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:37,103 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:37,218 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:37,341 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:37,570 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:37,684 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:37,873 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:37,987 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:38,103 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:38,227 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:38,355 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:38,470 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:38,601 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:38,723 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:38,834 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:38,968 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,090 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,210 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,329 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,462 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:39,576 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:39,702 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:39,929 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:40,043 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,179 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,385 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:40,499 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,623 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,818 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:40,931 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:41,054 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:41,276 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:41,387 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:41,520 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:41,644 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:41,755 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:41,878 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:41,995 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,108 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,238 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,347 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,458 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,580 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,703 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,814 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,942 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,056 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,166 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,292 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,402 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,526 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,645 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,877 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:43,988 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:44,111 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:44,316 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:44,426 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:44,557 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:44,768 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:44,877 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:44,998 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:45,190 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:45,302 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:45,427 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:45,628 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:45,746 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:45,891 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:46,108 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:46,219 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:46,344 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:46,663 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:46,775 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568