java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:23:35,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:23:35,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:23:35,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:23:35,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:23:35,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:23:35,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:23:35,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:23:35,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:23:35,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:23:35,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:23:35,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:23:35,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:23:35,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:23:35,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:23:35,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:23:35,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:23:35,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:23:35,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:23:35,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:23:35,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:23:35,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:23:35,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:23:35,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:23:35,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:23:35,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:23:35,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:23:35,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:23:35,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:23:35,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:23:35,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:23:35,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:23:35,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:23:35,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:23:35,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:23:35,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:23:35,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:23:35,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:23:35,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:23:35,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:23:35,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:23:35,404 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 03:23:35,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:23:35,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:23:35,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:23:35,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:23:35,423 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:23:35,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:23:35,424 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:23:35,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:23:35,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:23:35,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:23:35,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:23:35,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:23:35,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:23:35,425 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:23:35,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:23:35,426 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:23:35,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:23:35,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:23:35,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:23:35,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:23:35,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:23:35,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:35,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:23:35,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:23:35,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:23:35,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:23:35,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:23:35,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:23:35,428 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 03:23:35,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:23:35,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:23:35,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:23:35,741 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:23:35,742 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:23:35,742 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-10-15 03:23:35,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63b7acc64/2b1adc0f268947159d6073ed6a60d2cd/FLAG4146cf945 [2019-10-15 03:23:36,348 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:23:36,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-10-15 03:23:36,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63b7acc64/2b1adc0f268947159d6073ed6a60d2cd/FLAG4146cf945 [2019-10-15 03:23:36,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63b7acc64/2b1adc0f268947159d6073ed6a60d2cd [2019-10-15 03:23:36,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:23:36,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:23:36,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:36,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:23:36,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:23:36,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:36" (1/1) ... [2019-10-15 03:23:36,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:36, skipping insertion in model container [2019-10-15 03:23:36,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:36" (1/1) ... [2019-10-15 03:23:36,718 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:23:36,781 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:23:37,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:37,309 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:23:37,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:37,484 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:23:37,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37 WrapperNode [2019-10-15 03:23:37,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:37,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:23:37,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:23:37,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:23:37,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (1/1) ... [2019-10-15 03:23:37,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (1/1) ... [2019-10-15 03:23:37,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (1/1) ... [2019-10-15 03:23:37,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (1/1) ... [2019-10-15 03:23:37,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (1/1) ... [2019-10-15 03:23:37,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (1/1) ... [2019-10-15 03:23:37,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (1/1) ... [2019-10-15 03:23:37,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:23:37,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:23:37,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:23:37,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:23:37,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (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 03:23:37,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:23:37,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:23:37,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:37,645 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:23:37,645 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:23:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:23:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:23:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:23:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:23:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:23:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:23:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:23:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:23:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-15 03:23:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:23:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:23:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:23:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:23:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:23:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:23:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:23:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:23:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:23:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:23:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:23:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:23:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:23:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:23:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:23:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:23:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:23:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:23:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:23:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:23:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:23:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:23:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:23:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:23:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:23:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:23:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:23:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:23:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:23:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:23:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:23:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:23:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:23:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:23:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:23:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:23:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:23:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:23:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:23:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:23:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:23:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:23:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:23:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:23:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:23:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:23:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:23:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-15 03:23:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:23:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:23:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:23:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:23:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:23:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:23:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:23:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:23:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:23:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:23:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:23:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:23:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:23:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:23:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:23:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:23:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:23:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:23:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:23:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:23:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:23:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:23:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:23:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:23:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:23:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:23:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:23:39,374 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:23:39,375 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:23:39,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:39 BoogieIcfgContainer [2019-10-15 03:23:39,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:23:39,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:23:39,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:23:39,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:23:39,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:36" (1/3) ... [2019-10-15 03:23:39,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e8a095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:39, skipping insertion in model container [2019-10-15 03:23:39,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:37" (2/3) ... [2019-10-15 03:23:39,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e8a095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:39, skipping insertion in model container [2019-10-15 03:23:39,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:39" (3/3) ... [2019-10-15 03:23:39,386 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2019-10-15 03:23:39,396 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:23:39,407 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:23:39,419 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:23:39,462 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:23:39,463 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:23:39,463 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:23:39,463 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:23:39,463 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:23:39,463 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:23:39,463 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:23:39,464 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:23:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2019-10-15 03:23:39,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:23:39,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:39,510 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:39,513 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:39,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash -113543230, now seen corresponding path program 1 times [2019-10-15 03:23:39,538 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:39,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645555245] [2019-10-15 03:23:39,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:39,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:39,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:39,961 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 03:23:39,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645555245] [2019-10-15 03:23:39,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:39,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:23:39,969 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589499029] [2019-10-15 03:23:39,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:23:39,979 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:39,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:23:39,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:39,993 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 2 states. [2019-10-15 03:23:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:40,064 INFO L93 Difference]: Finished difference Result 276 states and 337 transitions. [2019-10-15 03:23:40,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:23:40,065 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:23:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:40,080 INFO L225 Difference]: With dead ends: 276 [2019-10-15 03:23:40,080 INFO L226 Difference]: Without dead ends: 140 [2019-10-15 03:23:40,085 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 03:23:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-10-15 03:23:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-10-15 03:23:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-15 03:23:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-10-15 03:23:40,146 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 52 [2019-10-15 03:23:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:40,146 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-10-15 03:23:40,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:23:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-10-15 03:23:40,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:23:40,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:40,151 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:40,152 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:40,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash 187593135, now seen corresponding path program 1 times [2019-10-15 03:23:40,153 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:40,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227024901] [2019-10-15 03:23:40,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:40,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:40,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:40,266 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 03:23:40,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227024901] [2019-10-15 03:23:40,267 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:40,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:23:40,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938652314] [2019-10-15 03:23:40,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:23:40,270 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:40,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:23:40,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:40,271 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 3 states. [2019-10-15 03:23:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:40,325 INFO L93 Difference]: Finished difference Result 224 states and 262 transitions. [2019-10-15 03:23:40,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:23:40,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:23:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:40,328 INFO L225 Difference]: With dead ends: 224 [2019-10-15 03:23:40,328 INFO L226 Difference]: Without dead ends: 132 [2019-10-15 03:23:40,330 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 03:23:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-15 03:23:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2019-10-15 03:23:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-10-15 03:23:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2019-10-15 03:23:40,347 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 53 [2019-10-15 03:23:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:40,347 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2019-10-15 03:23:40,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:23:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2019-10-15 03:23:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 03:23:40,350 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:40,350 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] [2019-10-15 03:23:40,350 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:40,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1200875707, now seen corresponding path program 1 times [2019-10-15 03:23:40,351 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:40,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411842133] [2019-10-15 03:23:40,352 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:40,352 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:40,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:40,568 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 03:23:40,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411842133] [2019-10-15 03:23:40,571 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:40,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:40,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686758466] [2019-10-15 03:23:40,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:40,572 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:40,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:40,574 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 7 states. [2019-10-15 03:23:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:41,203 INFO L93 Difference]: Finished difference Result 396 states and 476 transitions. [2019-10-15 03:23:41,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:23:41,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-15 03:23:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:41,207 INFO L225 Difference]: With dead ends: 396 [2019-10-15 03:23:41,208 INFO L226 Difference]: Without dead ends: 289 [2019-10-15 03:23:41,209 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:23:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2019-10-15 03:23:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 277. [2019-10-15 03:23:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-10-15 03:23:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 332 transitions. [2019-10-15 03:23:41,250 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 332 transitions. Word has length 57 [2019-10-15 03:23:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:41,250 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 332 transitions. [2019-10-15 03:23:41,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 332 transitions. [2019-10-15 03:23:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:23:41,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:41,256 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:41,258 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:41,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1189207168, now seen corresponding path program 1 times [2019-10-15 03:23:41,259 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:41,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941176889] [2019-10-15 03:23:41,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:41,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:41,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:23:41,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941176889] [2019-10-15 03:23:41,421 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:41,421 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:41,421 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88385197] [2019-10-15 03:23:41,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:41,422 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:41,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:41,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:41,423 INFO L87 Difference]: Start difference. First operand 277 states and 332 transitions. Second operand 7 states. [2019-10-15 03:23:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:42,171 INFO L93 Difference]: Finished difference Result 714 states and 929 transitions. [2019-10-15 03:23:42,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:23:42,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:23:42,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:42,177 INFO L225 Difference]: With dead ends: 714 [2019-10-15 03:23:42,178 INFO L226 Difference]: Without dead ends: 462 [2019-10-15 03:23:42,181 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:23:42,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-10-15 03:23:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 411. [2019-10-15 03:23:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-10-15 03:23:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 490 transitions. [2019-10-15 03:23:42,253 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 490 transitions. Word has length 61 [2019-10-15 03:23:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:42,255 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 490 transitions. [2019-10-15 03:23:42,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:42,255 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 490 transitions. [2019-10-15 03:23:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-15 03:23:42,260 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:42,261 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] [2019-10-15 03:23:42,261 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:42,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:42,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1473797885, now seen corresponding path program 1 times [2019-10-15 03:23:42,262 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:42,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260903150] [2019-10-15 03:23:42,262 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:42,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:42,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:42,562 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 03:23:42,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260903150] [2019-10-15 03:23:42,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:42,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:23:42,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075887450] [2019-10-15 03:23:42,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:23:42,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:42,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:23:42,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:23:42,565 INFO L87 Difference]: Start difference. First operand 411 states and 490 transitions. Second operand 12 states. [2019-10-15 03:23:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:43,626 INFO L93 Difference]: Finished difference Result 1226 states and 1483 transitions. [2019-10-15 03:23:43,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:23:43,627 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-10-15 03:23:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:43,634 INFO L225 Difference]: With dead ends: 1226 [2019-10-15 03:23:43,634 INFO L226 Difference]: Without dead ends: 840 [2019-10-15 03:23:43,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-10-15 03:23:43,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 818. [2019-10-15 03:23:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2019-10-15 03:23:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 976 transitions. [2019-10-15 03:23:43,709 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 976 transitions. Word has length 84 [2019-10-15 03:23:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:43,709 INFO L462 AbstractCegarLoop]: Abstraction has 818 states and 976 transitions. [2019-10-15 03:23:43,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:23:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 976 transitions. [2019-10-15 03:23:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 03:23:43,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:43,713 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 03:23:43,713 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:43,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1654303858, now seen corresponding path program 1 times [2019-10-15 03:23:43,736 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:43,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637681647] [2019-10-15 03:23:43,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:43,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:43,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:43,950 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 03:23:43,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637681647] [2019-10-15 03:23:43,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:43,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:23:43,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333924998] [2019-10-15 03:23:43,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:23:43,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:23:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:23:43,955 INFO L87 Difference]: Start difference. First operand 818 states and 976 transitions. Second operand 9 states. [2019-10-15 03:23:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:45,082 INFO L93 Difference]: Finished difference Result 2592 states and 3181 transitions. [2019-10-15 03:23:45,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:23:45,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-10-15 03:23:45,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:45,098 INFO L225 Difference]: With dead ends: 2592 [2019-10-15 03:23:45,098 INFO L226 Difference]: Without dead ends: 1971 [2019-10-15 03:23:45,101 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2019-10-15 03:23:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1681. [2019-10-15 03:23:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1681 states. [2019-10-15 03:23:45,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2021 transitions. [2019-10-15 03:23:45,226 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2021 transitions. Word has length 87 [2019-10-15 03:23:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:45,227 INFO L462 AbstractCegarLoop]: Abstraction has 1681 states and 2021 transitions. [2019-10-15 03:23:45,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:23:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2021 transitions. [2019-10-15 03:23:45,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:23:45,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:45,235 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:23:45,235 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:45,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1996398240, now seen corresponding path program 1 times [2019-10-15 03:23:45,236 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:45,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298233205] [2019-10-15 03:23:45,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:45,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:45,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:23:45,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298233205] [2019-10-15 03:23:45,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313791054] [2019-10-15 03:23:45,385 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 03:23:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:45,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:23:45,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:23:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:23:45,857 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:23:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:23:46,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [605488345] [2019-10-15 03:23:46,303 INFO L162 IcfgInterpreter]: Started Sifa with 93 locations of interest [2019-10-15 03:23:46,304 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:23:46,312 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:23:46,323 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:23:46,323 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:23:55,669 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:23:57,513 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:23:57,657 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:57,771 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:57,916 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:58,236 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:58,479 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:58,665 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:58,934 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:59,273 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:23:59,507 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:59,693 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:59,826 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:59,961 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:00,137 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:00,146 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:24:00,408 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:24:00,610 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:00,763 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,873 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:00,980 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:01,119 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,271 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:01,495 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,766 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:24:01,906 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:02,057 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:02,267 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:02,400 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:02,504 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:02,633 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:02,766 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:02,874 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:03,089 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:03,202 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:03,431 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:03,746 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:03,847 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:04,021 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:04,140 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,453 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,781 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,103 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,256 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,368 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,505 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,727 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:05,839 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,968 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,080 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,205 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,325 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,483 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,598 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,727 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,847 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,962 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,092 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,209 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,343 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,467 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,586 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:07,702 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:07,830 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:07,947 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:08,064 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:08,195 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:08,339 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:08,455 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:08,589 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:08,787 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:08,972 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:09,102 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:09,220 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:09,356 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:09,484 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:09,713 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:09,826 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,969 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,212 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:10,328 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,461 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,573 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,685 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,848 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,990 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:11,102 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:11,232 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:11,366 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:11,488 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:11,630 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:11,744 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:11,859 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:11,983 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:12,100 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:12,216 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:12,346 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:12,466 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:12,584 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:12,719 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:12,940 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:13,051 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,176 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,381 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:13,504 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,632 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,743 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,855 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,976 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,190 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:14,302 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,424 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,627 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:14,740 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,864 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,976 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,090 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,211 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,436 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:15,557 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:15,688 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:15,885 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:15,998 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:16,124 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:16,237 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:16,354 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:16,496 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568