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_spec2_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:20:00,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:20:00,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:20:00,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:20:00,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:20:00,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:20:00,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:20:00,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:20:00,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:20:00,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:20:00,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:20:00,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:20:00,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:20:00,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:20:00,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:20:00,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:20:00,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:20:00,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:20:00,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:20:00,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:20:00,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:20:00,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:20:00,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:20:00,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:20:00,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:20:00,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:20:00,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:20:00,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:20:00,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:20:00,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:20:00,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:20:00,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:20:00,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:20:00,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:20:00,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:20:00,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:20:00,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:20:00,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:20:00,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:20:00,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:20:00,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:20:00,474 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 03:20:00,491 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:20:00,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:20:00,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:20:00,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:20:00,494 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:20:00,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:20:00,494 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:20:00,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:20:00,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:20:00,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:20:00,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:20:00,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:20:00,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:20:00,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:20:00,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:20:00,497 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:20:00,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:20:00,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:20:00,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:20:00,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:20:00,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:20:00,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:00,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:20:00,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:20:00,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:20:00,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:20:00,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:20:00,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:20:00,500 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 03:20:00,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:20:00,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:20:00,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:20:00,828 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:20:00,829 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:20:00,829 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-10-15 03:20:00,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569e710cf/ca3fea78ee0a41999f8b385a152f07a4/FLAGa42fa4666 [2019-10-15 03:20:01,405 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:20:01,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-10-15 03:20:01,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569e710cf/ca3fea78ee0a41999f8b385a152f07a4/FLAGa42fa4666 [2019-10-15 03:20:01,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569e710cf/ca3fea78ee0a41999f8b385a152f07a4 [2019-10-15 03:20:01,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:20:01,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:20:01,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:01,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:20:01,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:20:01,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:01" (1/1) ... [2019-10-15 03:20:01,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4772fc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:01, skipping insertion in model container [2019-10-15 03:20:01,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:01" (1/1) ... [2019-10-15 03:20:01,895 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:20:01,955 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:20:02,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:02,370 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:20:02,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:02,508 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:20:02,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02 WrapperNode [2019-10-15 03:20:02,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:02,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:20:02,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:20:02,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:20:02,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (1/1) ... [2019-10-15 03:20:02,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (1/1) ... [2019-10-15 03:20:02,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (1/1) ... [2019-10-15 03:20:02,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (1/1) ... [2019-10-15 03:20:02,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (1/1) ... [2019-10-15 03:20:02,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (1/1) ... [2019-10-15 03:20:02,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (1/1) ... [2019-10-15 03:20:02,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:20:02,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:20:02,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:20:02,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:20:02,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (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 03:20:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:20:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:20:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:20:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:20:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:20:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:20:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:20:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:20:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:20:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:20:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:20:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:20:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:20:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:20:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:20:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:20:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:20:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:20:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:20:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:20:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:20:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:20:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:20:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:20:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:20:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:20:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:20:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:20:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:20:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:20:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:20:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:20:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:20:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:20:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:20:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:20:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:20:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:20:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:20:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:20:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:20:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:20:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:20:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:20:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:20:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:20:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:20:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:20:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:20:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:20:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:20:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:20:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:20:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:20:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:20:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:20:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:20:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:20:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:20:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:20:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:20:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:20:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:20:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:20:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:20:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:20:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:20:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:20:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:20:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:20:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:20:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:20:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:20:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:20:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:20:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:20:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:20:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:20:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:20:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:20:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:20:04,181 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:20:04,182 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:20:04,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:04 BoogieIcfgContainer [2019-10-15 03:20:04,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:20:04,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:20:04,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:20:04,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:20:04,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:20:01" (1/3) ... [2019-10-15 03:20:04,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aba844f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:04, skipping insertion in model container [2019-10-15 03:20:04,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:02" (2/3) ... [2019-10-15 03:20:04,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aba844f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:04, skipping insertion in model container [2019-10-15 03:20:04,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:04" (3/3) ... [2019-10-15 03:20:04,191 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2019-10-15 03:20:04,200 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:20:04,208 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:20:04,219 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:20:04,245 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:20:04,245 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:20:04,245 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:20:04,245 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:20:04,246 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:20:04,246 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:20:04,246 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:20:04,246 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:20:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2019-10-15 03:20:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:20:04,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:04,278 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 03:20:04,280 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:04,287 INFO L82 PathProgramCache]: Analyzing trace with hash 60094482, now seen corresponding path program 1 times [2019-10-15 03:20:04,299 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:04,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694888830] [2019-10-15 03:20:04,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:04,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:04,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:04,615 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 03:20:04,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694888830] [2019-10-15 03:20:04,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:04,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:20:04,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041775961] [2019-10-15 03:20:04,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:20:04,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:04,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:20:04,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:04,641 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 2 states. [2019-10-15 03:20:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:04,680 INFO L93 Difference]: Finished difference Result 216 states and 259 transitions. [2019-10-15 03:20:04,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:20:04,681 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-15 03:20:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:04,696 INFO L225 Difference]: With dead ends: 216 [2019-10-15 03:20:04,696 INFO L226 Difference]: Without dead ends: 110 [2019-10-15 03:20:04,701 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 03:20:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-15 03:20:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-10-15 03:20:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-15 03:20:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2019-10-15 03:20:04,760 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 46 [2019-10-15 03:20:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:04,761 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2019-10-15 03:20:04,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:20:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2019-10-15 03:20:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:20:04,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:04,765 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] [2019-10-15 03:20:04,765 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1957286119, now seen corresponding path program 1 times [2019-10-15 03:20:04,766 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:04,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249615484] [2019-10-15 03:20:04,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:04,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:04,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:04,924 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 03:20:04,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249615484] [2019-10-15 03:20:04,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:04,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:04,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431850698] [2019-10-15 03:20:04,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:04,931 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:04,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:04,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:04,932 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 3 states. [2019-10-15 03:20:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:04,964 INFO L93 Difference]: Finished difference Result 174 states and 198 transitions. [2019-10-15 03:20:04,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:04,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 03:20:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:04,970 INFO L225 Difference]: With dead ends: 174 [2019-10-15 03:20:04,970 INFO L226 Difference]: Without dead ends: 102 [2019-10-15 03:20:04,972 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 03:20:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-15 03:20:04,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-15 03:20:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-15 03:20:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2019-10-15 03:20:04,989 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 47 [2019-10-15 03:20:04,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:04,990 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2019-10-15 03:20:04,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2019-10-15 03:20:04,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-15 03:20:04,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:04,994 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] [2019-10-15 03:20:04,994 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:04,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:04,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1775341699, now seen corresponding path program 1 times [2019-10-15 03:20:04,995 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:04,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735087177] [2019-10-15 03:20:04,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:04,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:04,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:05,254 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 03:20:05,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735087177] [2019-10-15 03:20:05,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:05,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:05,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383717528] [2019-10-15 03:20:05,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:05,257 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:05,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:05,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:05,257 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2019-10-15 03:20:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:05,553 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2019-10-15 03:20:05,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:20:05,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-10-15 03:20:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:05,555 INFO L225 Difference]: With dead ends: 179 [2019-10-15 03:20:05,555 INFO L226 Difference]: Without dead ends: 102 [2019-10-15 03:20:05,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 03:20:05,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-15 03:20:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-15 03:20:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-15 03:20:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2019-10-15 03:20:05,569 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 49 [2019-10-15 03:20:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:05,570 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2019-10-15 03:20:05,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2019-10-15 03:20:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-15 03:20:05,575 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:05,575 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] [2019-10-15 03:20:05,575 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:05,576 INFO L82 PathProgramCache]: Analyzing trace with hash 8463179, now seen corresponding path program 1 times [2019-10-15 03:20:05,576 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:05,577 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574587362] [2019-10-15 03:20:05,577 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:05,577 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:05,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:05,757 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 03:20:05,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574587362] [2019-10-15 03:20:05,758 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:05,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:20:05,759 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642612121] [2019-10-15 03:20:05,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:20:05,760 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:05,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:20:05,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:20:05,761 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 5 states. [2019-10-15 03:20:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:06,162 INFO L93 Difference]: Finished difference Result 263 states and 308 transitions. [2019-10-15 03:20:06,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:20:06,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-15 03:20:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:06,167 INFO L225 Difference]: With dead ends: 263 [2019-10-15 03:20:06,168 INFO L226 Difference]: Without dead ends: 186 [2019-10-15 03:20:06,169 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 [2019-10-15 03:20:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-15 03:20:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 171. [2019-10-15 03:20:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2019-10-15 03:20:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 189 transitions. [2019-10-15 03:20:06,200 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 189 transitions. Word has length 62 [2019-10-15 03:20:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:06,200 INFO L462 AbstractCegarLoop]: Abstraction has 171 states and 189 transitions. [2019-10-15 03:20:06,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:20:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 189 transitions. [2019-10-15 03:20:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-15 03:20:06,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:06,202 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, 1, 1, 1] [2019-10-15 03:20:06,202 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:06,203 INFO L82 PathProgramCache]: Analyzing trace with hash 756721838, now seen corresponding path program 1 times [2019-10-15 03:20:06,203 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:06,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118807313] [2019-10-15 03:20:06,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:06,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:06,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:06,354 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 03:20:06,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118807313] [2019-10-15 03:20:06,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:06,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:20:06,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947141273] [2019-10-15 03:20:06,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:06,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:06,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:06,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:20:06,357 INFO L87 Difference]: Start difference. First operand 171 states and 189 transitions. Second operand 6 states. [2019-10-15 03:20:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:06,541 INFO L93 Difference]: Finished difference Result 446 states and 508 transitions. [2019-10-15 03:20:06,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:20:06,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-15 03:20:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:06,546 INFO L225 Difference]: With dead ends: 446 [2019-10-15 03:20:06,547 INFO L226 Difference]: Without dead ends: 300 [2019-10-15 03:20:06,549 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:20:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-10-15 03:20:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 290. [2019-10-15 03:20:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-10-15 03:20:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 318 transitions. [2019-10-15 03:20:06,593 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 318 transitions. Word has length 71 [2019-10-15 03:20:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:06,593 INFO L462 AbstractCegarLoop]: Abstraction has 290 states and 318 transitions. [2019-10-15 03:20:06,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 318 transitions. [2019-10-15 03:20:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:20:06,597 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:06,597 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, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:06,597 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:06,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1633920219, now seen corresponding path program 1 times [2019-10-15 03:20:06,598 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:06,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375534198] [2019-10-15 03:20:06,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:06,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:06,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:06,712 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 03:20:06,712 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375534198] [2019-10-15 03:20:06,713 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:06,713 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:06,713 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269034409] [2019-10-15 03:20:06,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:06,714 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:06,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:06,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:06,714 INFO L87 Difference]: Start difference. First operand 290 states and 318 transitions. Second operand 3 states. [2019-10-15 03:20:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:06,755 INFO L93 Difference]: Finished difference Result 436 states and 502 transitions. [2019-10-15 03:20:06,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:06,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-10-15 03:20:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:06,762 INFO L225 Difference]: With dead ends: 436 [2019-10-15 03:20:06,762 INFO L226 Difference]: Without dead ends: 433 [2019-10-15 03:20:06,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 03:20:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-10-15 03:20:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2019-10-15 03:20:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-10-15 03:20:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 497 transitions. [2019-10-15 03:20:06,799 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 497 transitions. Word has length 74 [2019-10-15 03:20:06,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:06,799 INFO L462 AbstractCegarLoop]: Abstraction has 433 states and 497 transitions. [2019-10-15 03:20:06,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:06,800 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 497 transitions. [2019-10-15 03:20:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 03:20:06,803 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:06,803 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] [2019-10-15 03:20:06,804 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:06,804 INFO L82 PathProgramCache]: Analyzing trace with hash 201450369, now seen corresponding path program 1 times [2019-10-15 03:20:06,804 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:06,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782201414] [2019-10-15 03:20:06,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:06,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:06,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:20:06,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782201414] [2019-10-15 03:20:06,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323541967] [2019-10-15 03:20:06,921 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 03:20:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:07,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:20:07,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:20:07,233 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:20:07,542 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:07,543 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 7] total 15 [2019-10-15 03:20:07,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401984701] [2019-10-15 03:20:07,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:07,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:07,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:07,546 INFO L87 Difference]: Start difference. First operand 433 states and 497 transitions. Second operand 6 states. [2019-10-15 03:20:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:07,891 INFO L93 Difference]: Finished difference Result 702 states and 819 transitions. [2019-10-15 03:20:07,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:20:07,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2019-10-15 03:20:07,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:07,899 INFO L225 Difference]: With dead ends: 702 [2019-10-15 03:20:07,899 INFO L226 Difference]: Without dead ends: 413 [2019-10-15 03:20:07,901 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-10-15 03:20:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 398. [2019-10-15 03:20:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2019-10-15 03:20:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 444 transitions. [2019-10-15 03:20:07,928 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 444 transitions. Word has length 122 [2019-10-15 03:20:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:07,929 INFO L462 AbstractCegarLoop]: Abstraction has 398 states and 444 transitions. [2019-10-15 03:20:07,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 444 transitions. [2019-10-15 03:20:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 03:20:07,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:07,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:08,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:08,145 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:08,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1954551727, now seen corresponding path program 1 times [2019-10-15 03:20:08,146 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:08,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061670889] [2019-10-15 03:20:08,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:08,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:08,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:20:08,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061670889] [2019-10-15 03:20:08,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656922012] [2019-10-15 03:20:08,244 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 03:20:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:08,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:20:08,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:08,507 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:20:08,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:08,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-10-15 03:20:08,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700396190] [2019-10-15 03:20:08,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:08,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:08,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:08,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:20:08,717 INFO L87 Difference]: Start difference. First operand 398 states and 444 transitions. Second operand 3 states. [2019-10-15 03:20:08,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:08,784 INFO L93 Difference]: Finished difference Result 728 states and 814 transitions. [2019-10-15 03:20:08,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:08,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-15 03:20:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:08,787 INFO L225 Difference]: With dead ends: 728 [2019-10-15 03:20:08,787 INFO L226 Difference]: Without dead ends: 355 [2019-10-15 03:20:08,788 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 244 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 03:20:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2019-10-15 03:20:08,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2019-10-15 03:20:08,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2019-10-15 03:20:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 384 transitions. [2019-10-15 03:20:08,810 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 384 transitions. Word has length 122 [2019-10-15 03:20:08,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:08,810 INFO L462 AbstractCegarLoop]: Abstraction has 355 states and 384 transitions. [2019-10-15 03:20:08,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 384 transitions. [2019-10-15 03:20:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:20:08,813 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:08,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:09,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:09,018 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:09,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2040046191, now seen corresponding path program 1 times [2019-10-15 03:20:09,018 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:09,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554566825] [2019-10-15 03:20:09,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:09,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:09,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:20:09,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554566825] [2019-10-15 03:20:09,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228979678] [2019-10-15 03:20:09,332 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 03:20:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:09,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-15 03:20:09,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:09,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:09,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:09,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:09,967 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:10,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:10,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:10,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:11,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:11,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:11,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:11,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:20:11,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:11,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-10-15 03:20:11,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142595788] [2019-10-15 03:20:11,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:20:11,485 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:20:11,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 03:20:11,487 INFO L87 Difference]: Start difference. First operand 355 states and 384 transitions. Second operand 12 states. [2019-10-15 03:20:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:13,020 INFO L93 Difference]: Finished difference Result 823 states and 930 transitions. [2019-10-15 03:20:13,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 03:20:13,021 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 125 [2019-10-15 03:20:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:13,026 INFO L225 Difference]: With dead ends: 823 [2019-10-15 03:20:13,027 INFO L226 Difference]: Without dead ends: 493 [2019-10-15 03:20:13,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 224 SyntacticMatches, 12 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=1765, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 03:20:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-15 03:20:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 427. [2019-10-15 03:20:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-15 03:20:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 465 transitions. [2019-10-15 03:20:13,103 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 465 transitions. Word has length 125 [2019-10-15 03:20:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:13,104 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 465 transitions. [2019-10-15 03:20:13,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:20:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 465 transitions. [2019-10-15 03:20:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:20:13,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:13,106 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:13,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:13,312 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:13,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1724913290, now seen corresponding path program 1 times [2019-10-15 03:20:13,312 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:13,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535606648] [2019-10-15 03:20:13,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:13,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:13,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:20:13,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535606648] [2019-10-15 03:20:13,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088070988] [2019-10-15 03:20:13,630 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 03:20:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:13,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 50 conjunts are in the unsatisfiable core [2019-10-15 03:20:13,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:14,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,081 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:14,242 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:14,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:14,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:15,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:15,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:15,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:20:15,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1957212567] [2019-10-15 03:20:15,271 INFO L162 IcfgInterpreter]: Started Sifa with 98 locations of interest [2019-10-15 03:20:15,271 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:20:15,276 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:20:15,282 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:20:15,282 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:20:24,443 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:20:26,115 WARN L191 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:20:26,245 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:26,366 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:26,588 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:26,913 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:27,138 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:27,352 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:27,599 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:27,930 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:20:28,066 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:28,238 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:28,358 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:28,476 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:28,594 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:28,603 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:20:28,862 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:20:28,863 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:20:28,975 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:29,089 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:29,216 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:29,337 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:29,472 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:29,595 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:29,714 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:29,933 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:30,177 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 546 [2019-10-15 03:20:30,290 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:30,438 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:30,777 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:31,102 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:31,212 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:31,314 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:31,463 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:31,664 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:31,782 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:31,884 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:32,118 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:32,434 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:32,751 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:32,886 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:20:33,108 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:33,426 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:33,608 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:33,746 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:33,867 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:33,995 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:34,104 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:34,230 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:34,341 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:34,450 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:34,572 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:34,729 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:20:34,858 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:20:34,981 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:35,189 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-15 03:20:35,303 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:20:35,429 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:35,557 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:20:35,670 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:20:35,791 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:35,910 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:20:36,020 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:20:36,148 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:36,271 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:36,382 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:36,529 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:36,678 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:36,789 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:36,911 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:37,262 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-15 03:20:37,377 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:37,510 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:37,621 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:37,734 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:37,856 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:38,099 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:38,241 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:38,369 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:38,481 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:38,589 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:38,719 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:38,846 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:38,957 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:39,121 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:39,250 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:39,362 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:39,488 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:39,706 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:39,817 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:39,947 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:40,149 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:40,259 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:40,379 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:40,579 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 564 [2019-10-15 03:20:40,692 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:40,818 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:41,024 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 566 [2019-10-15 03:20:41,136 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:41,267 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:41,509 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:41,790 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 560