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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:20:16,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:20:16,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:20:16,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:20:16,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:20:16,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:20:16,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:20:16,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:20:16,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:20:16,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:20:16,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:20:16,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:20:16,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:20:16,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:20:16,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:20:16,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:20:16,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:20:16,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:20:16,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:20:16,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:20:16,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:20:16,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:20:16,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:20:16,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:20:16,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:20:16,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:20:16,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:20:16,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:20:16,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:20:16,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:20:16,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:20:16,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:20:16,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:20:16,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:20:16,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:20:16,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:20:16,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:20:16,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:20:16,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:20:16,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:20:16,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:20:16,485 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 03:20:16,505 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:20:16,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:20:16,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:20:16,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:20:16,507 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:20:16,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:20:16,507 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:20:16,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:20:16,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:20:16,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:20:16,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:20:16,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:20:16,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:20:16,509 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:20:16,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:20:16,509 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:20:16,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:20:16,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:20:16,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:20:16,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:20:16,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:20:16,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:16,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:20:16,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:20:16,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:20:16,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:20:16,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:20:16,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:20:16,512 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 03:20:16,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:20:16,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:20:16,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:20:16,800 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:20:16,800 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:20:16,801 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c [2019-10-15 03:20:16,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae7b2818/a474410db98c4819ba887b04e05880a3/FLAGaa6c2929b [2019-10-15 03:20:17,398 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:20:17,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c [2019-10-15 03:20:17,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae7b2818/a474410db98c4819ba887b04e05880a3/FLAGaa6c2929b [2019-10-15 03:20:17,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae7b2818/a474410db98c4819ba887b04e05880a3 [2019-10-15 03:20:17,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:20:17,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:20:17,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:17,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:20:17,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:20:17,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:17" (1/1) ... [2019-10-15 03:20:17,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4b78c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:17, skipping insertion in model container [2019-10-15 03:20:17,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:17" (1/1) ... [2019-10-15 03:20:17,685 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:20:17,742 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:20:18,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:18,221 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:20:18,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:18,369 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:20:18,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18 WrapperNode [2019-10-15 03:20:18,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:18,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:20:18,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:20:18,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:20:18,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:20:18,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:20:18,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:20:18,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:20:18,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:20:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:20:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:20:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:20:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:20:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:20:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:20:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:20:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:20:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:20:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:20:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:20:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:20:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:20:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:20:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:20:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:20:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:20:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:20:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:20:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:20:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:20:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:20:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:20:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:20:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:20:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:20:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:20:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:20:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:20:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:20:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:20:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:20:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:20:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:20:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:20:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:20:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:20:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:20:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:20:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:20:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:20:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:20:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:20:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:20:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:20:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:20:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:20:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:20:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:20:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:20:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:20:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:20:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:20:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:20:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:20:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:20:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:20:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:20:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:20:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:20:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:20:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:20:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:20:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:20:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:20:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:20:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:20:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:20:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:20:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:20:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:20:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:20:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:20:20,286 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:20:20,287 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:20:20,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:20 BoogieIcfgContainer [2019-10-15 03:20:20,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:20:20,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:20:20,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:20:20,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:20:20,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:20:17" (1/3) ... [2019-10-15 03:20:20,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e741c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:20, skipping insertion in model container [2019-10-15 03:20:20,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18" (2/3) ... [2019-10-15 03:20:20,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e741c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:20, skipping insertion in model container [2019-10-15 03:20:20,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:20" (3/3) ... [2019-10-15 03:20:20,298 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product57.cil.c [2019-10-15 03:20:20,309 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:20:20,318 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:20:20,330 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:20:20,358 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:20:20,358 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:20:20,358 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:20:20,359 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:20:20,359 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:20:20,359 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:20:20,359 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:20:20,360 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:20:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2019-10-15 03:20:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:20:20,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:20,395 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 03:20:20,397 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:20,403 INFO L82 PathProgramCache]: Analyzing trace with hash 460544378, now seen corresponding path program 1 times [2019-10-15 03:20:20,412 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:20,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518251999] [2019-10-15 03:20:20,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:20,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:20,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:20,772 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 03:20:20,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518251999] [2019-10-15 03:20:20,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:20,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:20:20,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817473852] [2019-10-15 03:20:20,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:20:20,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:20:20,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:20,808 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 2 states. [2019-10-15 03:20:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:20,867 INFO L93 Difference]: Finished difference Result 238 states and 285 transitions. [2019-10-15 03:20:20,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:20:20,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-15 03:20:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:20,880 INFO L225 Difference]: With dead ends: 238 [2019-10-15 03:20:20,881 INFO L226 Difference]: Without dead ends: 121 [2019-10-15 03:20:20,885 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 03:20:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-15 03:20:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-10-15 03:20:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-15 03:20:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2019-10-15 03:20:20,937 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 46 [2019-10-15 03:20:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:20,937 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2019-10-15 03:20:20,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:20:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2019-10-15 03:20:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:20:20,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:20,942 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 03:20:20,942 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:20,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1113830539, now seen corresponding path program 1 times [2019-10-15 03:20:20,943 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:20,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642319992] [2019-10-15 03:20:20,943 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:20,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:20,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:21,100 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 03:20:21,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642319992] [2019-10-15 03:20:21,101 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:21,101 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:21,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669376298] [2019-10-15 03:20:21,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:21,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:21,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:21,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:21,106 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 3 states. [2019-10-15 03:20:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:21,159 INFO L93 Difference]: Finished difference Result 196 states and 224 transitions. [2019-10-15 03:20:21,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:21,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 03:20:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:21,164 INFO L225 Difference]: With dead ends: 196 [2019-10-15 03:20:21,164 INFO L226 Difference]: Without dead ends: 113 [2019-10-15 03:20:21,168 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 03:20:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-15 03:20:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-10-15 03:20:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-15 03:20:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2019-10-15 03:20:21,197 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 47 [2019-10-15 03:20:21,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:21,198 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2019-10-15 03:20:21,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:21,198 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2019-10-15 03:20:21,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-15 03:20:21,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:21,208 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 03:20:21,208 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:21,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:21,209 INFO L82 PathProgramCache]: Analyzing trace with hash 636064672, now seen corresponding path program 1 times [2019-10-15 03:20:21,209 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:21,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068448450] [2019-10-15 03:20:21,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:21,455 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 03:20:21,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068448450] [2019-10-15 03:20:21,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:21,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:21,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307298076] [2019-10-15 03:20:21,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:21,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:21,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:21,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:21,458 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2019-10-15 03:20:21,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:21,779 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2019-10-15 03:20:21,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:20:21,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-10-15 03:20:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:21,782 INFO L225 Difference]: With dead ends: 201 [2019-10-15 03:20:21,782 INFO L226 Difference]: Without dead ends: 113 [2019-10-15 03:20:21,784 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 03:20:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-15 03:20:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-10-15 03:20:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-15 03:20:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2019-10-15 03:20:21,809 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 49 [2019-10-15 03:20:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:21,810 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2019-10-15 03:20:21,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2019-10-15 03:20:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-15 03:20:21,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:21,812 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 03:20:21,812 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash 687835803, now seen corresponding path program 1 times [2019-10-15 03:20:21,812 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:21,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972255807] [2019-10-15 03:20:21,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:21,926 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 03:20:21,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972255807] [2019-10-15 03:20:21,927 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:21,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:20:21,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409017644] [2019-10-15 03:20:21,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:20:21,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:21,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:20:21,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:20:21,930 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand 5 states. [2019-10-15 03:20:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:22,472 INFO L93 Difference]: Finished difference Result 287 states and 336 transitions. [2019-10-15 03:20:22,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:20:22,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-15 03:20:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:22,478 INFO L225 Difference]: With dead ends: 287 [2019-10-15 03:20:22,478 INFO L226 Difference]: Without dead ends: 199 [2019-10-15 03:20:22,480 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 03:20:22,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-10-15 03:20:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 184. [2019-10-15 03:20:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2019-10-15 03:20:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 204 transitions. [2019-10-15 03:20:22,533 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 204 transitions. Word has length 62 [2019-10-15 03:20:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:22,533 INFO L462 AbstractCegarLoop]: Abstraction has 184 states and 204 transitions. [2019-10-15 03:20:22,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:20:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 204 transitions. [2019-10-15 03:20:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-15 03:20:22,535 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:22,535 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 03:20:22,535 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:22,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:22,536 INFO L82 PathProgramCache]: Analyzing trace with hash -329908176, now seen corresponding path program 1 times [2019-10-15 03:20:22,536 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:22,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86545716] [2019-10-15 03:20:22,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:22,688 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 03:20:22,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86545716] [2019-10-15 03:20:22,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:22,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:20:22,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296390092] [2019-10-15 03:20:22,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:22,691 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:22,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:22,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:20:22,692 INFO L87 Difference]: Start difference. First operand 184 states and 204 transitions. Second operand 6 states. [2019-10-15 03:20:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:22,922 INFO L93 Difference]: Finished difference Result 485 states and 553 transitions. [2019-10-15 03:20:22,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:20:22,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-15 03:20:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:22,927 INFO L225 Difference]: With dead ends: 485 [2019-10-15 03:20:22,927 INFO L226 Difference]: Without dead ends: 326 [2019-10-15 03:20:22,928 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 03:20:22,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-15 03:20:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 316. [2019-10-15 03:20:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2019-10-15 03:20:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 348 transitions. [2019-10-15 03:20:22,963 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 348 transitions. Word has length 71 [2019-10-15 03:20:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:22,964 INFO L462 AbstractCegarLoop]: Abstraction has 316 states and 348 transitions. [2019-10-15 03:20:22,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 348 transitions. [2019-10-15 03:20:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:20:22,965 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:22,966 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 03:20:22,966 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:22,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:22,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1674285327, now seen corresponding path program 1 times [2019-10-15 03:20:22,967 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:22,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528901356] [2019-10-15 03:20:22,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:23,091 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 03:20:23,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528901356] [2019-10-15 03:20:23,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:23,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:23,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013631076] [2019-10-15 03:20:23,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:23,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:23,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:23,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:23,094 INFO L87 Difference]: Start difference. First operand 316 states and 348 transitions. Second operand 7 states. [2019-10-15 03:20:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:23,706 INFO L93 Difference]: Finished difference Result 497 states and 566 transitions. [2019-10-15 03:20:23,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:20:23,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2019-10-15 03:20:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:23,710 INFO L225 Difference]: With dead ends: 497 [2019-10-15 03:20:23,710 INFO L226 Difference]: Without dead ends: 338 [2019-10-15 03:20:23,711 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:20:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2019-10-15 03:20:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 315. [2019-10-15 03:20:23,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-10-15 03:20:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 345 transitions. [2019-10-15 03:20:23,736 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 345 transitions. Word has length 74 [2019-10-15 03:20:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:23,737 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 345 transitions. [2019-10-15 03:20:23,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:23,737 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 345 transitions. [2019-10-15 03:20:23,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 03:20:23,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:23,739 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:23,739 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:23,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:23,739 INFO L82 PathProgramCache]: Analyzing trace with hash -386248813, now seen corresponding path program 1 times [2019-10-15 03:20:23,740 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:23,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047096670] [2019-10-15 03:20:23,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:20:23,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047096670] [2019-10-15 03:20:23,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955929196] [2019-10-15 03:20:23,901 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 03:20:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:24,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:20:24,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:24,182 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:24,363 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:20:24,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-15 03:20:24,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498040655] [2019-10-15 03:20:24,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:24,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:24,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:24,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:24,370 INFO L87 Difference]: Start difference. First operand 315 states and 345 transitions. Second operand 3 states. [2019-10-15 03:20:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:24,413 INFO L93 Difference]: Finished difference Result 453 states and 509 transitions. [2019-10-15 03:20:24,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:24,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2019-10-15 03:20:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:24,417 INFO L225 Difference]: With dead ends: 453 [2019-10-15 03:20:24,417 INFO L226 Difference]: Without dead ends: 450 [2019-10-15 03:20:24,418 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-10-15 03:20:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 443. [2019-10-15 03:20:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-10-15 03:20:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 497 transitions. [2019-10-15 03:20:24,449 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 497 transitions. Word has length 87 [2019-10-15 03:20:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:24,450 INFO L462 AbstractCegarLoop]: Abstraction has 443 states and 497 transitions. [2019-10-15 03:20:24,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 497 transitions. [2019-10-15 03:20:24,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 03:20:24,453 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:24,453 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:24,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:24,660 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1379291083, now seen corresponding path program 1 times [2019-10-15 03:20:24,661 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:24,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128388878] [2019-10-15 03:20:24,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:24,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:24,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:20:24,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128388878] [2019-10-15 03:20:24,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419678667] [2019-10-15 03:20:24,862 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 03:20:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:25,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 03:20:25,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:20:25,237 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 03:20:26,039 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:26,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 12] total 25 [2019-10-15 03:20:26,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380258242] [2019-10-15 03:20:26,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:20:26,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:26,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:20:26,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2019-10-15 03:20:26,042 INFO L87 Difference]: Start difference. First operand 443 states and 497 transitions. Second operand 11 states. [2019-10-15 03:20:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:26,841 INFO L93 Difference]: Finished difference Result 957 states and 1110 transitions. [2019-10-15 03:20:26,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:20:26,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 138 [2019-10-15 03:20:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:26,846 INFO L225 Difference]: With dead ends: 957 [2019-10-15 03:20:26,846 INFO L226 Difference]: Without dead ends: 539 [2019-10-15 03:20:26,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2019-10-15 03:20:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-15 03:20:26,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 528. [2019-10-15 03:20:26,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2019-10-15 03:20:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 587 transitions. [2019-10-15 03:20:26,883 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 587 transitions. Word has length 138 [2019-10-15 03:20:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:26,884 INFO L462 AbstractCegarLoop]: Abstraction has 528 states and 587 transitions. [2019-10-15 03:20:26,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:20:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 587 transitions. [2019-10-15 03:20:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 03:20:26,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:26,888 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:20:27,098 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:27,098 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:27,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:27,099 INFO L82 PathProgramCache]: Analyzing trace with hash 792749221, now seen corresponding path program 1 times [2019-10-15 03:20:27,099 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:27,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031709736] [2019-10-15 03:20:27,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 35 proven. 14 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 03:20:27,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031709736] [2019-10-15 03:20:27,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71275723] [2019-10-15 03:20:27,368 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 03:20:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:27,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-15 03:20:27,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:27,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:27,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:27,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 03:20:28,096 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:28,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:28,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:28,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:29,487 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:29,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 35 proven. 14 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 03:20:29,749 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:29,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-10-15 03:20:29,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560903252] [2019-10-15 03:20:29,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:20:29,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:29,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:20:29,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 03:20:29,757 INFO L87 Difference]: Start difference. First operand 528 states and 587 transitions. Second operand 12 states. [2019-10-15 03:20:31,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:31,818 INFO L93 Difference]: Finished difference Result 1291 states and 1500 transitions. [2019-10-15 03:20:31,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-15 03:20:31,818 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 183 [2019-10-15 03:20:31,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:31,824 INFO L225 Difference]: With dead ends: 1291 [2019-10-15 03:20:31,825 INFO L226 Difference]: Without dead ends: 788 [2019-10-15 03:20:31,827 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 341 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=396, Invalid=2054, Unknown=0, NotChecked=0, Total=2450 [2019-10-15 03:20:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-10-15 03:20:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 749. [2019-10-15 03:20:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-15 03:20:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 851 transitions. [2019-10-15 03:20:31,875 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 851 transitions. Word has length 183 [2019-10-15 03:20:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:31,875 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 851 transitions. [2019-10-15 03:20:31,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:20:31,875 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 851 transitions. [2019-10-15 03:20:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 03:20:31,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:31,880 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:20:32,085 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:32,086 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:32,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2045392550, now seen corresponding path program 1 times [2019-10-15 03:20:32,087 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:32,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175717202] [2019-10-15 03:20:32,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:32,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:32,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 17 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-15 03:20:32,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175717202] [2019-10-15 03:20:32,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908605624] [2019-10-15 03:20:32,564 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 03:20:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:32,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 50 conjunts are in the unsatisfiable core [2019-10-15 03:20:32,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:33,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:33,073 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:33,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 74 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:33,273 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:33,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:33,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:33,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,500 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-15 03:20:34,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781958887] [2019-10-15 03:20:34,753 INFO L162 IcfgInterpreter]: Started Sifa with 109 locations of interest [2019-10-15 03:20:34,753 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:20:34,760 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:20:34,766 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:20:34,767 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:20:44,524 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:20:46,387 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:20:46,527 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:46,670 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:46,856 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:47,223 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:47,452 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:47,659 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:47,856 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:48,181 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:20:48,319 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:48,468 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:48,572 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:48,679 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:48,819 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:48,827 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:20:49,059 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 550 for LOIs [2019-10-15 03:20:49,162 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:49,270 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:49,406 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:49,548 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:49,680 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:49,802 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:49,932 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,034 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,180 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:50,376 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 550 [2019-10-15 03:20:50,477 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,606 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:50,717 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,825 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,060 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:51,162 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,266 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,393 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:51,605 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,746 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:51,848 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,957 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,078 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:52,181 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,285 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,406 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:52,513 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,654 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,775 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:52,878 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,987 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:53,107 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:53,209 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:53,315 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:53,435 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:53,555 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:53,659 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:53,779 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:53,917 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:54,027 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:54,148 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:54,386 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-15 03:20:54,530 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:54,682 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:54,791 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:54,902 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:55,022 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:20:55,174 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,286 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,408 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,644 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:55,756 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,879 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,081 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:56,196 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564