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_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:16:54,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:16:54,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:16:54,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:16:54,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:16:54,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:16:54,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:16:54,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:16:54,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:16:54,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:16:54,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:16:54,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:16:54,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:16:54,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:16:54,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:16:54,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:16:54,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:16:54,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:16:54,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:16:54,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:16:54,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:16:54,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:16:54,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:16:54,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:16:54,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:16:54,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:16:54,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:16:54,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:16:54,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:16:54,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:16:54,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:16:54,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:16:54,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:16:54,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:16:54,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:16:54,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:16:54,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:16:54,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:16:54,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:16:54,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:16:54,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:16:54,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:16:54,497 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:16:54,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:16:54,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:16:54,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:16:54,500 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:16:54,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:16:54,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:16:54,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:16:54,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:16:54,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:16:54,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:16:54,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:16:54,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:16:54,503 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:16:54,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:16:54,503 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:16:54,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:16:54,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:16:54,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:16:54,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:16:54,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:16:54,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:16:54,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:16:54,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:16:54,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:16:54,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:16:54,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:16:54,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:16:54,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:16:54,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:16:54,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:16:54,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:16:54,808 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:16:54,808 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:16:54,809 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2019-10-13 23:16:54,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db839750e/b082c40e68084df68e1f789359da699d/FLAGab8939045 [2019-10-13 23:16:55,432 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:16:55,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2019-10-13 23:16:55,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db839750e/b082c40e68084df68e1f789359da699d/FLAGab8939045 [2019-10-13 23:16:55,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db839750e/b082c40e68084df68e1f789359da699d [2019-10-13 23:16:55,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:16:55,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:16:55,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:16:55,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:16:55,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:16:55,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:55" (1/1) ... [2019-10-13 23:16:55,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e18baf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:55, skipping insertion in model container [2019-10-13 23:16:55,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:55" (1/1) ... [2019-10-13 23:16:55,783 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:16:55,841 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:16:56,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:16:56,330 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:16:56,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:16:56,450 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:16:56,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56 WrapperNode [2019-10-13 23:16:56,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:16:56,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:16:56,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:16:56,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:16:56,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:16:56,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:16:56,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:16:56,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:16:56,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:16:56,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:16:56,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:16:56,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:16:56,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:16:56,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:16:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:16:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:16:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:16:56,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:16:56,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 23:16:56,639 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:16:56,640 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:16:56,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:16:56,640 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:16:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:16:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:16:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:16:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:16:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:16:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:16:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:16:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:16:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:16:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:16:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:16:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:16:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:16:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:16:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:16:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:16:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:16:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:16:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:16:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:16:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:16:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:16:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:16:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:16:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:16:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:16:56,649 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:16:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:16:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:16:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:16:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:16:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:16:56,650 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:16:56,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:16:56,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:16:56,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:16:56,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:16:56,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:16:56,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:16:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:16:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:16:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:16:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:16:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:16:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:16:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:16:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:16:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:16:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:16:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:16:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 23:16:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:16:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:16:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:16:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:16:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:16:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:16:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:16:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:16:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:16:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:16:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:16:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:16:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:16:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:16:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:16:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:16:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:16:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:16:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:16:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:16:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:16:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:16:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:16:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:16:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:16:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:16:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:16:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:16:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:16:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:16:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:16:58,412 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:16:58,412 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:16:58,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:58 BoogieIcfgContainer [2019-10-13 23:16:58,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:16:58,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:16:58,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:16:58,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:16:58,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:16:55" (1/3) ... [2019-10-13 23:16:58,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ce312b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:58, skipping insertion in model container [2019-10-13 23:16:58,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (2/3) ... [2019-10-13 23:16:58,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ce312b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:58, skipping insertion in model container [2019-10-13 23:16:58,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:58" (3/3) ... [2019-10-13 23:16:58,423 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2019-10-13 23:16:58,433 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:16:58,445 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:16:58,461 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:16:58,505 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:16:58,505 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:16:58,506 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:16:58,506 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:16:58,506 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:16:58,506 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:16:58,507 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:16:58,507 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:16:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2019-10-13 23:16:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 23:16:58,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:58,553 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] [2019-10-13 23:16:58,556 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:58,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:58,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1855036009, now seen corresponding path program 1 times [2019-10-13 23:16:58,575 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:58,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361585001] [2019-10-13 23:16:58,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:58,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:58,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:16:58,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361585001] [2019-10-13 23:16:58,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:58,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:16:58,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246637108] [2019-10-13 23:16:58,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:16:58,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:59,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:16:59,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:16:59,015 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 2 states. [2019-10-13 23:16:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:59,058 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2019-10-13 23:16:59,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:16:59,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-13 23:16:59,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:59,073 INFO L225 Difference]: With dead ends: 219 [2019-10-13 23:16:59,073 INFO L226 Difference]: Without dead ends: 110 [2019-10-13 23:16:59,078 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:16:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-13 23:16:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-10-13 23:16:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-13 23:16:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2019-10-13 23:16:59,135 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 42 [2019-10-13 23:16:59,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:59,136 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2019-10-13 23:16:59,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:16:59,136 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2019-10-13 23:16:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 23:16:59,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:59,140 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] [2019-10-13 23:16:59,140 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:59,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1724353903, now seen corresponding path program 1 times [2019-10-13 23:16:59,141 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:59,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738086114] [2019-10-13 23:16:59,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:16:59,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738086114] [2019-10-13 23:16:59,258 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:59,258 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:16:59,258 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918017793] [2019-10-13 23:16:59,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:16:59,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:59,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:16:59,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:16:59,262 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 3 states. [2019-10-13 23:16:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:59,298 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2019-10-13 23:16:59,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:16:59,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-13 23:16:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:59,303 INFO L225 Difference]: With dead ends: 173 [2019-10-13 23:16:59,303 INFO L226 Difference]: Without dead ends: 102 [2019-10-13 23:16:59,306 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:16:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-13 23:16:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-13 23:16:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-13 23:16:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2019-10-13 23:16:59,326 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 43 [2019-10-13 23:16:59,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:59,326 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2019-10-13 23:16:59,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:16:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2019-10-13 23:16:59,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 23:16:59,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:59,329 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] [2019-10-13 23:16:59,330 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:59,330 INFO L82 PathProgramCache]: Analyzing trace with hash -526236297, now seen corresponding path program 1 times [2019-10-13 23:16:59,331 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:59,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28746164] [2019-10-13 23:16:59,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:16:59,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28746164] [2019-10-13 23:16:59,533 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:59,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:16:59,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645823915] [2019-10-13 23:16:59,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:16:59,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:59,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:16:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:16:59,535 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2019-10-13 23:16:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:59,921 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2019-10-13 23:16:59,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:16:59,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-13 23:16:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:59,924 INFO L225 Difference]: With dead ends: 182 [2019-10-13 23:16:59,924 INFO L226 Difference]: Without dead ends: 102 [2019-10-13 23:16:59,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:16:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-13 23:16:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-13 23:16:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-13 23:16:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2019-10-13 23:16:59,938 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 46 [2019-10-13 23:16:59,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:59,938 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2019-10-13 23:16:59,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:16:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2019-10-13 23:16:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 23:16:59,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:59,943 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, 1, 1, 1, 1, 1] [2019-10-13 23:16:59,944 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:59,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1609259560, now seen corresponding path program 1 times [2019-10-13 23:16:59,944 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:59,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978347234] [2019-10-13 23:16:59,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:17:00,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978347234] [2019-10-13 23:17:00,068 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:17:00,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:17:00,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896332382] [2019-10-13 23:17:00,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:17:00,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:00,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:17:00,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:17:00,070 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 5 states. [2019-10-13 23:17:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:00,528 INFO L93 Difference]: Finished difference Result 270 states and 316 transitions. [2019-10-13 23:17:00,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:17:00,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-10-13 23:17:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:00,532 INFO L225 Difference]: With dead ends: 270 [2019-10-13 23:17:00,532 INFO L226 Difference]: Without dead ends: 190 [2019-10-13 23:17:00,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:17:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2019-10-13 23:17:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2019-10-13 23:17:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-10-13 23:17:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 190 transitions. [2019-10-13 23:17:00,586 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 190 transitions. Word has length 59 [2019-10-13 23:17:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:00,586 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 190 transitions. [2019-10-13 23:17:00,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:17:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 190 transitions. [2019-10-13 23:17:00,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-13 23:17:00,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:00,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:17:00,595 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash 502948974, now seen corresponding path program 1 times [2019-10-13 23:17:00,596 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:00,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833511196] [2019-10-13 23:17:00,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:00,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:00,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:17:00,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833511196] [2019-10-13 23:17:00,785 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:17:00,785 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:17:00,786 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833659393] [2019-10-13 23:17:00,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:17:00,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:00,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:17:00,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:17:00,789 INFO L87 Difference]: Start difference. First operand 173 states and 190 transitions. Second operand 10 states. [2019-10-13 23:17:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:01,325 INFO L93 Difference]: Finished difference Result 508 states and 587 transitions. [2019-10-13 23:17:01,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:17:01,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2019-10-13 23:17:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:01,331 INFO L225 Difference]: With dead ends: 508 [2019-10-13 23:17:01,331 INFO L226 Difference]: Without dead ends: 357 [2019-10-13 23:17:01,333 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 [2019-10-13 23:17:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2019-10-13 23:17:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 343. [2019-10-13 23:17:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-13 23:17:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 384 transitions. [2019-10-13 23:17:01,374 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 384 transitions. Word has length 68 [2019-10-13 23:17:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:01,375 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 384 transitions. [2019-10-13 23:17:01,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:17:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 384 transitions. [2019-10-13 23:17:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:17:01,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:01,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:17:01,380 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:01,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1046324478, now seen corresponding path program 1 times [2019-10-13 23:17:01,380 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:01,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81624058] [2019-10-13 23:17:01,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:01,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:01,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:17:01,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81624058] [2019-10-13 23:17:01,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690533454] [2019-10-13 23:17:01,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:17:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:01,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:17:01,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:17:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:17:02,049 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:17:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:17:02,245 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:17:02,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [14] total 19 [2019-10-13 23:17:02,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769085509] [2019-10-13 23:17:02,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:17:02,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:02,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:17:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:17:02,247 INFO L87 Difference]: Start difference. First operand 343 states and 384 transitions. Second operand 7 states. [2019-10-13 23:17:02,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:02,580 INFO L93 Difference]: Finished difference Result 352 states and 393 transitions. [2019-10-13 23:17:02,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:17:02,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-13 23:17:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:02,587 INFO L225 Difference]: With dead ends: 352 [2019-10-13 23:17:02,587 INFO L226 Difference]: Without dead ends: 349 [2019-10-13 23:17:02,588 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2019-10-13 23:17:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-10-13 23:17:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2019-10-13 23:17:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-13 23:17:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 383 transitions. [2019-10-13 23:17:02,619 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 383 transitions. Word has length 112 [2019-10-13 23:17:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:02,619 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 383 transitions. [2019-10-13 23:17:02,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:17:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 383 transitions. [2019-10-13 23:17:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-13 23:17:02,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:02,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:17:02,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:17:02,828 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:02,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1916115072, now seen corresponding path program 1 times [2019-10-13 23:17:02,829 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:02,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382100420] [2019-10-13 23:17:02,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:02,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:02,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:17:03,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382100420] [2019-10-13 23:17:03,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206118221] [2019-10-13 23:17:03,103 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 [2019-10-13 23:17:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:03,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-13 23:17:03,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:17:03,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:03,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:17:03,693 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:17:04,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:04,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:04,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:04,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:17:05,233 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:17:05,233 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-13 23:17:05,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764918574] [2019-10-13 23:17:05,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 23:17:05,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:05,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 23:17:05,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 23:17:05,236 INFO L87 Difference]: Start difference. First operand 343 states and 383 transitions. Second operand 14 states. [2019-10-13 23:17:07,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:07,489 INFO L93 Difference]: Finished difference Result 757 states and 870 transitions. [2019-10-13 23:17:07,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 23:17:07,490 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 114 [2019-10-13 23:17:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:07,495 INFO L225 Difference]: With dead ends: 757 [2019-10-13 23:17:07,495 INFO L226 Difference]: Without dead ends: 436 [2019-10-13 23:17:07,498 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 206 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=388, Invalid=2474, Unknown=0, NotChecked=0, Total=2862 [2019-10-13 23:17:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-10-13 23:17:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 429. [2019-10-13 23:17:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-13 23:17:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 481 transitions. [2019-10-13 23:17:07,531 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 481 transitions. Word has length 114 [2019-10-13 23:17:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:07,532 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 481 transitions. [2019-10-13 23:17:07,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 23:17:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 481 transitions. [2019-10-13 23:17:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:17:07,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:07,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:17:07,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:17:07,740 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:07,740 INFO L82 PathProgramCache]: Analyzing trace with hash -675322502, now seen corresponding path program 1 times [2019-10-13 23:17:07,741 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:07,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887079766] [2019-10-13 23:17:07,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:07,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:07,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:17:07,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887079766] [2019-10-13 23:17:07,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704475631] [2019-10-13 23:17:07,956 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 [2019-10-13 23:17:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:08,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 54 conjunts are in the unsatisfiable core [2019-10-13 23:17:08,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:17:08,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:08,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:17:08,450 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:17:08,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:08,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:08,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:08,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:09,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:09,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:09,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:09,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:09,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:09,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:09,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:17:09,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1093039944] [2019-10-13 23:17:09,692 INFO L162 IcfgInterpreter]: Started Sifa with 92 locations of interest [2019-10-13 23:17:09,692 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:17:09,699 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:17:09,708 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:17:09,709 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:17:20,715 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-13 23:17:22,257 WARN L191 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:17:22,395 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:17:22,531 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:17:22,720 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:17:23,144 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:23,579 WARN L191 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:23,836 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:24,091 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:24,543 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-13 23:17:24,765 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:25,007 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:25,205 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:25,406 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:25,550 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:25,558 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-13 23:17:25,786 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-13 23:17:25,905 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:26,053 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:26,195 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:26,315 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:26,417 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:26,572 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:26,714 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:26,831 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:26,962 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:27,172 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-13 23:17:27,426 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:27,638 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:27,755 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:27,857 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:28,087 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:28,400 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:28,509 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:28,759 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:29,073 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:29,388 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:29,503 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:29,719 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:30,111 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:30,224 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:30,330 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:17:30,479 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:30,644 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:30,753 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:30,877 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:31,113 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:17:31,222 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:31,354 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:31,467 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:31,576 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:31,695 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:31,831 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:31,961 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:32,088 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:32,326 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-13 23:17:32,462 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-13 23:17:32,706 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:32,913 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-13 23:17:33,023 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-13 23:17:33,142 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:33,257 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:17:33,370 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:17:33,504 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:17:33,619 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:33,733 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:33,865 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:34,005 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:34,120 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:34,245 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:34,363 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:34,500 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:34,773 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 567