java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:22:17,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:22:17,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:22:17,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:22:17,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:22:17,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:22:17,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:22:17,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:22:17,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:22:17,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:22:17,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:22:17,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:22:17,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:22:17,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:22:17,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:22:17,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:22:17,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:22:17,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:22:17,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:22:17,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:22:17,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:22:17,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:22:17,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:22:17,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:22:17,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:22:17,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:22:17,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:22:17,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:22:17,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:22:17,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:22:17,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:22:17,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:22:17,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:22:17,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:22:17,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:22:17,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:22:17,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:22:17,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:22:17,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:22:17,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:22:17,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:22:17,369 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 03:22:17,383 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:22:17,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:22:17,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:22:17,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:22:17,385 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:22:17,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:22:17,386 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:22:17,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:22:17,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:22:17,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:22:17,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:22:17,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:22:17,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:22:17,387 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:22:17,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:22:17,388 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:22:17,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:22:17,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:22:17,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:22:17,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:22:17,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:22:17,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:22:17,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:22:17,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:22:17,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:22:17,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:22:17,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:22:17,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:22:17,391 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 03:22:17,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:22:17,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:22:17,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:22:17,733 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:22:17,734 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:22:17,734 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-10-15 03:22:17,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2e76969/83a395f3dee4498f8181e62c68de9d49/FLAG169e15d06 [2019-10-15 03:22:18,374 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:22:18,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-10-15 03:22:18,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2e76969/83a395f3dee4498f8181e62c68de9d49/FLAG169e15d06 [2019-10-15 03:22:18,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2e76969/83a395f3dee4498f8181e62c68de9d49 [2019-10-15 03:22:18,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:22:18,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:22:18,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:22:18,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:22:18,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:22:18,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:22:18" (1/1) ... [2019-10-15 03:22:18,659 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 15.10 03:22:18, skipping insertion in model container [2019-10-15 03:22:18,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:22:18" (1/1) ... [2019-10-15 03:22:18,666 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:22:18,708 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:22:19,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:22:19,259 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:22:19,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:22:19,386 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:22:19,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19 WrapperNode [2019-10-15 03:22:19,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:22:19,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:22:19,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:22:19,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:22:19,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (1/1) ... [2019-10-15 03:22:19,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (1/1) ... [2019-10-15 03:22:19,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (1/1) ... [2019-10-15 03:22:19,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (1/1) ... [2019-10-15 03:22:19,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (1/1) ... [2019-10-15 03:22:19,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (1/1) ... [2019-10-15 03:22:19,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (1/1) ... [2019-10-15 03:22:19,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:22:19,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:22:19,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:22:19,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:22:19,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (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 03:22:19,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:22:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:22:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:22:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:22:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:22:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:22:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:22:19,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:22:19,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:22:19,555 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:22:19,555 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:22:19,556 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:22:19,556 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:22:19,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:22:19,557 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:22:19,557 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:22:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:22:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:22:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:22:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:22:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:22:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:22:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:22:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:22:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:22:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:22:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:22:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:22:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:22:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:22:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:22:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:22:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:22:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:22:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:22:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:22:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:22:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:22:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:22:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:22:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:22:19,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:22:19,565 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:22:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:22:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:22:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:22:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:22:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:22:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:22:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:22:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:22:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:22:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:22:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:22:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:22:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:22:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:22:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:22:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:22:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:22:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:22:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:22:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:22:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:22:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:22:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:22:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:22:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:22:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:22:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:22:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:22:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:22:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:22:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:22:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:22:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:22:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:22:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:22:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:22:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:22:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:22:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:22:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:22:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:22:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:22:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:22:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:22:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:22:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:22:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:22:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:22:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:22:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:22:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:22:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:22:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:22:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:22:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:22:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:22:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:22:21,251 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:22:21,251 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:22:21,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:22:21 BoogieIcfgContainer [2019-10-15 03:22:21,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:22:21,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:22:21,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:22:21,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:22:21,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:22:18" (1/3) ... [2019-10-15 03:22:21,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4688266f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:22:21, skipping insertion in model container [2019-10-15 03:22:21,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:22:19" (2/3) ... [2019-10-15 03:22:21,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4688266f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:22:21, skipping insertion in model container [2019-10-15 03:22:21,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:22:21" (3/3) ... [2019-10-15 03:22:21,262 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2019-10-15 03:22:21,272 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:22:21,282 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:22:21,294 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:22:21,321 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:22:21,321 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:22:21,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:22:21,321 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:22:21,322 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:22:21,322 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:22:21,322 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:22:21,323 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:22:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2019-10-15 03:22:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:22:21,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:21,358 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 03:22:21,360 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash -627710674, now seen corresponding path program 1 times [2019-10-15 03:22:21,378 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:21,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361159823] [2019-10-15 03:22:21,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:21,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:21,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:21,776 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 03:22:21,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361159823] [2019-10-15 03:22:21,778 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:22:21,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:22:21,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097933716] [2019-10-15 03:22:21,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:22:21,784 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:22:21,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:22:21,801 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 2 states. [2019-10-15 03:22:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:21,854 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2019-10-15 03:22:21,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:22:21,859 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:22:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:21,874 INFO L225 Difference]: With dead ends: 271 [2019-10-15 03:22:21,875 INFO L226 Difference]: Without dead ends: 136 [2019-10-15 03:22:21,880 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 03:22:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-10-15 03:22:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-10-15 03:22:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-15 03:22:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2019-10-15 03:22:21,944 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 42 [2019-10-15 03:22:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:21,945 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2019-10-15 03:22:21,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:22:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2019-10-15 03:22:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:22:21,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:21,949 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 03:22:21,949 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash 577917647, now seen corresponding path program 1 times [2019-10-15 03:22:21,950 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:21,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106146621] [2019-10-15 03:22:21,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:21,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:21,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:22,109 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 03:22:22,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106146621] [2019-10-15 03:22:22,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:22:22,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:22:22,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066733743] [2019-10-15 03:22:22,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:22:22,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:22,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:22:22,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:22:22,117 INFO L87 Difference]: Start difference. First operand 136 states and 160 transitions. Second operand 3 states. [2019-10-15 03:22:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:22,156 INFO L93 Difference]: Finished difference Result 222 states and 260 transitions. [2019-10-15 03:22:22,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:22:22,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:22:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:22,159 INFO L225 Difference]: With dead ends: 222 [2019-10-15 03:22:22,160 INFO L226 Difference]: Without dead ends: 128 [2019-10-15 03:22:22,162 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 03:22:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-15 03:22:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-10-15 03:22:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-15 03:22:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2019-10-15 03:22:22,180 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 43 [2019-10-15 03:22:22,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:22,181 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2019-10-15 03:22:22,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:22:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2019-10-15 03:22:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:22:22,183 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:22,183 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 03:22:22,184 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:22,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:22,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1796130562, now seen corresponding path program 1 times [2019-10-15 03:22:22,185 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:22,185 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195524409] [2019-10-15 03:22:22,185 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:22,185 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:22,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:22,380 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 03:22:22,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195524409] [2019-10-15 03:22:22,381 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:22:22,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:22:22,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248625367] [2019-10-15 03:22:22,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:22:22,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:22,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:22:22,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:22:22,385 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 7 states. [2019-10-15 03:22:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:22,878 INFO L93 Difference]: Finished difference Result 384 states and 460 transitions. [2019-10-15 03:22:22,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:22:22,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-15 03:22:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:22,883 INFO L225 Difference]: With dead ends: 384 [2019-10-15 03:22:22,883 INFO L226 Difference]: Without dead ends: 278 [2019-10-15 03:22:22,885 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 03:22:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-15 03:22:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2019-10-15 03:22:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2019-10-15 03:22:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2019-10-15 03:22:22,949 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 46 [2019-10-15 03:22:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:22,949 INFO L462 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2019-10-15 03:22:22,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:22:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2019-10-15 03:22:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 03:22:22,958 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:22,958 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 03:22:22,958 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:22,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:22,959 INFO L82 PathProgramCache]: Analyzing trace with hash -851174668, now seen corresponding path program 1 times [2019-10-15 03:22:22,959 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:22,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958527850] [2019-10-15 03:22:22,962 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:22,962 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:22,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:23,118 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 03:22:23,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958527850] [2019-10-15 03:22:23,118 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:22:23,119 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:22:23,119 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990101776] [2019-10-15 03:22:23,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:22:23,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:23,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:22:23,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:22:23,121 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand 10 states. [2019-10-15 03:22:23,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:23,859 INFO L93 Difference]: Finished difference Result 975 states and 1214 transitions. [2019-10-15 03:22:23,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:22:23,860 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-10-15 03:22:23,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:23,869 INFO L225 Difference]: With dead ends: 975 [2019-10-15 03:22:23,869 INFO L226 Difference]: Without dead ends: 727 [2019-10-15 03:22:23,875 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:22:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-10-15 03:22:23,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 703. [2019-10-15 03:22:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2019-10-15 03:22:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 860 transitions. [2019-10-15 03:22:23,947 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 860 transitions. Word has length 51 [2019-10-15 03:22:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:23,947 INFO L462 AbstractCegarLoop]: Abstraction has 703 states and 860 transitions. [2019-10-15 03:22:23,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:22:23,948 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 860 transitions. [2019-10-15 03:22:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-15 03:22:23,952 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:23,952 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 03:22:23,952 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:23,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:23,953 INFO L82 PathProgramCache]: Analyzing trace with hash 367047727, now seen corresponding path program 1 times [2019-10-15 03:22:23,953 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:23,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580740250] [2019-10-15 03:22:23,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:23,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:23,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:24,026 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 03:22:24,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580740250] [2019-10-15 03:22:24,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:22:24,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:22:24,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473755678] [2019-10-15 03:22:24,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:22:24,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:24,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:22:24,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:22:24,029 INFO L87 Difference]: Start difference. First operand 703 states and 860 transitions. Second operand 4 states. [2019-10-15 03:22:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:24,444 INFO L93 Difference]: Finished difference Result 1708 states and 2242 transitions. [2019-10-15 03:22:24,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:22:24,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-10-15 03:22:24,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:24,455 INFO L225 Difference]: With dead ends: 1708 [2019-10-15 03:22:24,456 INFO L226 Difference]: Without dead ends: 1027 [2019-10-15 03:22:24,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:22:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-15 03:22:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 897. [2019-10-15 03:22:24,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2019-10-15 03:22:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1060 transitions. [2019-10-15 03:22:24,565 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1060 transitions. Word has length 54 [2019-10-15 03:22:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:24,566 INFO L462 AbstractCegarLoop]: Abstraction has 897 states and 1060 transitions. [2019-10-15 03:22:24,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:22:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1060 transitions. [2019-10-15 03:22:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 03:22:24,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:24,571 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:22:24,571 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:24,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1521884808, now seen corresponding path program 1 times [2019-10-15 03:22:24,572 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:24,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572361034] [2019-10-15 03:22:24,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:24,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:24,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:22:24,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572361034] [2019-10-15 03:22:24,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298270080] [2019-10-15 03:22:24,742 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 03:22:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:24,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:22:24,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:22:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:22:25,005 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:22:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:22:25,128 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:22:25,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-15 03:22:25,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223249537] [2019-10-15 03:22:25,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:22:25,129 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:25,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:22:25,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:22:25,130 INFO L87 Difference]: Start difference. First operand 897 states and 1060 transitions. Second operand 7 states. [2019-10-15 03:22:25,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:25,446 INFO L93 Difference]: Finished difference Result 910 states and 1076 transitions. [2019-10-15 03:22:25,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:22:25,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2019-10-15 03:22:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:25,453 INFO L225 Difference]: With dead ends: 910 [2019-10-15 03:22:25,453 INFO L226 Difference]: Without dead ends: 907 [2019-10-15 03:22:25,454 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:22:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2019-10-15 03:22:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 897. [2019-10-15 03:22:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2019-10-15 03:22:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1057 transitions. [2019-10-15 03:22:25,524 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1057 transitions. Word has length 78 [2019-10-15 03:22:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:25,525 INFO L462 AbstractCegarLoop]: Abstraction has 897 states and 1057 transitions. [2019-10-15 03:22:25,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:22:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1057 transitions. [2019-10-15 03:22:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:22:25,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:25,530 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:22:25,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:22:25,737 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:25,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2004119821, now seen corresponding path program 1 times [2019-10-15 03:22:25,738 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:25,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125644563] [2019-10-15 03:22:25,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:25,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:25,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:22:25,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125644563] [2019-10-15 03:22:25,826 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:22:25,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:22:25,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978147742] [2019-10-15 03:22:25,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:22:25,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:25,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:22:25,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:22:25,829 INFO L87 Difference]: Start difference. First operand 897 states and 1057 transitions. Second operand 3 states. [2019-10-15 03:22:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:25,894 INFO L93 Difference]: Finished difference Result 1023 states and 1210 transitions. [2019-10-15 03:22:25,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:22:25,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-15 03:22:25,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:25,900 INFO L225 Difference]: With dead ends: 1023 [2019-10-15 03:22:25,900 INFO L226 Difference]: Without dead ends: 401 [2019-10-15 03:22:25,902 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 03:22:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-10-15 03:22:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2019-10-15 03:22:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2019-10-15 03:22:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 458 transitions. [2019-10-15 03:22:25,929 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 458 transitions. Word has length 118 [2019-10-15 03:22:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:25,929 INFO L462 AbstractCegarLoop]: Abstraction has 401 states and 458 transitions. [2019-10-15 03:22:25,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:22:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 458 transitions. [2019-10-15 03:22:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-15 03:22:25,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:25,932 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:22:25,932 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:25,933 INFO L82 PathProgramCache]: Analyzing trace with hash -340350988, now seen corresponding path program 1 times [2019-10-15 03:22:25,933 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:25,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167609197] [2019-10-15 03:22:25,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:25,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:25,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:22:26,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167609197] [2019-10-15 03:22:26,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667925391] [2019-10-15 03:22:26,046 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 03:22:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:26,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:22:26,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:22:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:22:26,344 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:22:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:22:26,677 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:22:26,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-10-15 03:22:26,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187582601] [2019-10-15 03:22:26,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:22:26,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:26,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:22:26,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:22:26,682 INFO L87 Difference]: Start difference. First operand 401 states and 458 transitions. Second operand 3 states. [2019-10-15 03:22:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:26,758 INFO L93 Difference]: Finished difference Result 780 states and 894 transitions. [2019-10-15 03:22:26,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:22:26,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2019-10-15 03:22:26,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:26,762 INFO L225 Difference]: With dead ends: 780 [2019-10-15 03:22:26,762 INFO L226 Difference]: Without dead ends: 401 [2019-10-15 03:22:26,763 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 306 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:22:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-10-15 03:22:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 372. [2019-10-15 03:22:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-10-15 03:22:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 397 transitions. [2019-10-15 03:22:26,787 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 397 transitions. Word has length 153 [2019-10-15 03:22:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:26,788 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 397 transitions. [2019-10-15 03:22:26,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:22:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 397 transitions. [2019-10-15 03:22:26,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:22:26,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:26,794 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:26,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:22:26,998 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:26,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:26,999 INFO L82 PathProgramCache]: Analyzing trace with hash 623432320, now seen corresponding path program 1 times [2019-10-15 03:22:26,999 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:26,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397647713] [2019-10-15 03:22:27,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:27,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:27,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:22:27,309 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397647713] [2019-10-15 03:22:27,309 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:22:27,310 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-15 03:22:27,310 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876084052] [2019-10-15 03:22:27,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:22:27,311 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:27,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:22:27,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:22:27,312 INFO L87 Difference]: Start difference. First operand 372 states and 397 transitions. Second operand 14 states. [2019-10-15 03:22:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:27,747 INFO L93 Difference]: Finished difference Result 680 states and 760 transitions. [2019-10-15 03:22:27,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:22:27,747 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2019-10-15 03:22:27,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:27,753 INFO L225 Difference]: With dead ends: 680 [2019-10-15 03:22:27,753 INFO L226 Difference]: Without dead ends: 507 [2019-10-15 03:22:27,754 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:22:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2019-10-15 03:22:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 432. [2019-10-15 03:22:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2019-10-15 03:22:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 468 transitions. [2019-10-15 03:22:27,784 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 468 transitions. Word has length 140 [2019-10-15 03:22:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:27,787 INFO L462 AbstractCegarLoop]: Abstraction has 432 states and 468 transitions. [2019-10-15 03:22:27,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:22:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 468 transitions. [2019-10-15 03:22:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:22:27,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:27,789 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:27,790 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:27,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1527854114, now seen corresponding path program 1 times [2019-10-15 03:22:27,790 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:27,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938789145] [2019-10-15 03:22:27,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:27,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:27,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:22:28,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938789145] [2019-10-15 03:22:28,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129026974] [2019-10-15 03:22:28,205 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 03:22:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:28,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:22:28,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:22:28,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:28,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:28,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:22:28,822 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:22:29,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:30,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:30,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:22:30,802 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:22:30,802 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 13] total 36 [2019-10-15 03:22:30,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751297017] [2019-10-15 03:22:30,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:22:30,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:22:30,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:22:30,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 03:22:30,804 INFO L87 Difference]: Start difference. First operand 432 states and 468 transitions. Second operand 14 states. [2019-10-15 03:22:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:22:33,016 INFO L93 Difference]: Finished difference Result 979 states and 1131 transitions. [2019-10-15 03:22:33,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-15 03:22:33,016 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 146 [2019-10-15 03:22:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:22:33,020 INFO L225 Difference]: With dead ends: 979 [2019-10-15 03:22:33,021 INFO L226 Difference]: Without dead ends: 569 [2019-10-15 03:22:33,027 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 269 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=398, Invalid=2572, Unknown=0, NotChecked=0, Total=2970 [2019-10-15 03:22:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-10-15 03:22:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 520. [2019-10-15 03:22:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-10-15 03:22:33,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 577 transitions. [2019-10-15 03:22:33,063 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 577 transitions. Word has length 146 [2019-10-15 03:22:33,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:22:33,064 INFO L462 AbstractCegarLoop]: Abstraction has 520 states and 577 transitions. [2019-10-15 03:22:33,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:22:33,064 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 577 transitions. [2019-10-15 03:22:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 03:22:33,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:22:33,068 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:33,283 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:22:33,283 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:22:33,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:22:33,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2124556396, now seen corresponding path program 1 times [2019-10-15 03:22:33,284 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:22:33,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216903805] [2019-10-15 03:22:33,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:33,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:22:33,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:22:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:22:33,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216903805] [2019-10-15 03:22:33,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179984268] [2019-10-15 03:22:33,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:22:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:22:33,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-15 03:22:33,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:22:33,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:22:34,088 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:22:34,422 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:34,422 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:34,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:34,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:34,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:34,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:34,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:22:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:22:34,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1014453446] [2019-10-15 03:22:34,943 INFO L162 IcfgInterpreter]: Started Sifa with 114 locations of interest [2019-10-15 03:22:34,943 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:22:34,950 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:22:34,958 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:22:34,958 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:22:43,505 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:22:45,147 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:22:45,281 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:45,408 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:45,523 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:45,766 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:46,003 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:46,200 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:46,374 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:46,723 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:22:46,844 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:47,010 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:47,156 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:47,308 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:47,431 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:47,438 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:22:47,702 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-15 03:22:47,703 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-10-15 03:22:48,056 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:48,172 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:48,275 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:48,406 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:48,634 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:48,752 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:48,967 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 542 [2019-10-15 03:22:49,198 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:49,330 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:49,545 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:49,875 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:50,197 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:50,510 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:50,641 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:50,859 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:51,166 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:51,375 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:51,489 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:51,795 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:51,995 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:52,138 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:52,325 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:52,508 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:52,651 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:52,853 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:52,961 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:53,100 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:53,207 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:53,314 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:53,429 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:53,574 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:53,695 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:53,815 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:53,938 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:54,064 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:54,207 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:54,317 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:54,430 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:54,557 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:54,675 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:54,783 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:54,917 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:55,026 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:55,136 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:55,259 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:55,394 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:55,502 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:55,621 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:55,854 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 564 DAG size of output: 560 [2019-10-15 03:22:55,962 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:56,082 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:56,192 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:56,301 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:56,421 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:56,626 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:56,737 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:56,900 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:57,222 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:57,329 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556