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_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:20:17,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:20:17,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:20:17,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:20:17,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:20:17,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:20:17,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:20:17,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:20:17,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:20:17,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:20:17,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:20:17,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:20:17,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:20:17,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:20:17,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:20:17,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:20:17,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:20:17,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:20:17,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:20:17,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:20:17,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:20:17,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:20:17,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:20:17,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:20:17,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:20:17,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:20:17,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:20:17,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:20:17,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:20:17,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:20:17,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:20:17,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:20:17,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:20:17,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:20:17,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:20:17,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:20:17,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:20:17,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:20:17,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:20:17,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:20:17,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:20:17,287 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 03:20:17,301 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:20:17,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:20:17,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:20:17,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:20:17,302 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:20:17,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:20:17,303 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:20:17,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:20:17,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:20:17,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:20:17,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:20:17,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:20:17,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:20:17,304 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:20:17,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:20:17,305 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:20:17,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:20:17,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:20:17,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:20:17,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:20:17,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:20:17,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:17,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:20:17,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:20:17,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:20:17,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:20:17,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:20:17,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:20:17,307 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 03:20:17,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:20:17,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:20:17,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:20:17,638 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:20:17,638 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:20:17,639 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product58.cil.c [2019-10-15 03:20:17,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72e62da7/49831c0209e146fe81fcf0afe30317b1/FLAG4ff273c07 [2019-10-15 03:20:18,277 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:20:18,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product58.cil.c [2019-10-15 03:20:18,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72e62da7/49831c0209e146fe81fcf0afe30317b1/FLAG4ff273c07 [2019-10-15 03:20:18,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72e62da7/49831c0209e146fe81fcf0afe30317b1 [2019-10-15 03:20:18,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:20:18,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:20:18,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:18,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:20:18,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:20:18,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbc4866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18, skipping insertion in model container [2019-10-15 03:20:18,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,594 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:20:18,663 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:20:19,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:19,175 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:20:19,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:19,336 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:20:19,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19 WrapperNode [2019-10-15 03:20:19,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:19,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:20:19,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:20:19,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:20:19,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:20:19,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:20:19,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:20:19,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:20:19,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:20:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:20:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:20:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:20:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:20:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:20:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:20:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:20:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:20:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:20:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:20:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:20:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:20:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:20:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:20:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:20:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:20:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:20:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:20:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:20:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:20:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:20:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:20:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:20:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:20:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:20:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:20:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:20:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:20:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:20:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:20:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:20:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:20:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:20:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:20:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:20:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:20:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:20:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:20:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:20:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:20:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:20:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:20:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:20:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:20:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:20:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:20:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:20:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:20:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:20:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:20:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:20:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:20:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:20:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:20:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:20:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:20:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:20:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:20:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:20:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:20:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:20:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:20:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:20:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:20:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:20:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:20:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:20:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:20:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:20:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:20:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:20:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:20:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:20:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:20:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:20:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:20:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:20:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:20:21,196 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:20:21,196 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:20:21,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:21 BoogieIcfgContainer [2019-10-15 03:20:21,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:20:21,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:20:21,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:20:21,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:20:21,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:20:18" (1/3) ... [2019-10-15 03:20:21,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f124bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:21, skipping insertion in model container [2019-10-15 03:20:21,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (2/3) ... [2019-10-15 03:20:21,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f124bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:21, skipping insertion in model container [2019-10-15 03:20:21,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:21" (3/3) ... [2019-10-15 03:20:21,207 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product58.cil.c [2019-10-15 03:20:21,220 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:20:21,234 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:20:21,247 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:20:21,284 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:20:21,284 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:20:21,284 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:20:21,284 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:20:21,285 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:20:21,285 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:20:21,286 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:20:21,286 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:20:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 03:20:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:20:21,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:21,331 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 03:20:21,334 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:21,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1478823579, now seen corresponding path program 1 times [2019-10-15 03:20:21,350 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:21,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157525732] [2019-10-15 03:20:21,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,352 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:21,678 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 03:20:21,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157525732] [2019-10-15 03:20:21,680 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:21,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:20:21,682 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456694889] [2019-10-15 03:20:21,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:20:21,689 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:21,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:20:21,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:21,716 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 2 states. [2019-10-15 03:20:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:21,783 INFO L93 Difference]: Finished difference Result 246 states and 295 transitions. [2019-10-15 03:20:21,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:20:21,785 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-15 03:20:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:21,798 INFO L225 Difference]: With dead ends: 246 [2019-10-15 03:20:21,799 INFO L226 Difference]: Without dead ends: 125 [2019-10-15 03:20:21,803 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 03:20:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-15 03:20:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-10-15 03:20:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-15 03:20:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2019-10-15 03:20:21,861 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 46 [2019-10-15 03:20:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:21,862 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2019-10-15 03:20:21,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:20:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2019-10-15 03:20:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:20:21,866 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:21,867 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 03:20:21,867 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:21,868 INFO L82 PathProgramCache]: Analyzing trace with hash 946761388, now seen corresponding path program 1 times [2019-10-15 03:20:21,868 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:21,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099023665] [2019-10-15 03:20:21,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:22,020 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 03:20:22,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099023665] [2019-10-15 03:20:22,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:22,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:22,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368575906] [2019-10-15 03:20:22,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:22,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:22,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:22,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:22,026 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand 3 states. [2019-10-15 03:20:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:22,079 INFO L93 Difference]: Finished difference Result 200 states and 229 transitions. [2019-10-15 03:20:22,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:22,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 03:20:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:22,082 INFO L225 Difference]: With dead ends: 200 [2019-10-15 03:20:22,083 INFO L226 Difference]: Without dead ends: 117 [2019-10-15 03:20:22,087 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 03:20:22,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-15 03:20:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2019-10-15 03:20:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-15 03:20:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2019-10-15 03:20:22,120 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 47 [2019-10-15 03:20:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:22,121 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2019-10-15 03:20:22,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2019-10-15 03:20:22,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-15 03:20:22,132 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:22,132 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] [2019-10-15 03:20:22,132 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1418644644, now seen corresponding path program 1 times [2019-10-15 03:20:22,133 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:22,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474267921] [2019-10-15 03:20:22,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:22,356 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 03:20:22,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474267921] [2019-10-15 03:20:22,357 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:22,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:22,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982664329] [2019-10-15 03:20:22,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:22,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:22,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:22,358 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand 7 states. [2019-10-15 03:20:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:22,693 INFO L93 Difference]: Finished difference Result 209 states and 240 transitions. [2019-10-15 03:20:22,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:20:22,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2019-10-15 03:20:22,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:22,696 INFO L225 Difference]: With dead ends: 209 [2019-10-15 03:20:22,696 INFO L226 Difference]: Without dead ends: 117 [2019-10-15 03:20:22,697 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:20:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-15 03:20:22,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2019-10-15 03:20:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-15 03:20:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2019-10-15 03:20:22,711 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 50 [2019-10-15 03:20:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:22,711 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2019-10-15 03:20:22,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2019-10-15 03:20:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-15 03:20:22,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:22,714 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] [2019-10-15 03:20:22,714 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:22,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:22,715 INFO L82 PathProgramCache]: Analyzing trace with hash -115851954, now seen corresponding path program 1 times [2019-10-15 03:20:22,715 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:22,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641911573] [2019-10-15 03:20:22,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:22,839 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 03:20:22,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641911573] [2019-10-15 03:20:22,840 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:22,840 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:20:22,841 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879228927] [2019-10-15 03:20:22,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:20:22,842 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:22,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:20:22,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:20:22,843 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 5 states. [2019-10-15 03:20:23,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:23,328 INFO L93 Difference]: Finished difference Result 301 states and 355 transitions. [2019-10-15 03:20:23,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:20:23,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2019-10-15 03:20:23,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:23,331 INFO L225 Difference]: With dead ends: 301 [2019-10-15 03:20:23,332 INFO L226 Difference]: Without dead ends: 209 [2019-10-15 03:20:23,333 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 03:20:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-10-15 03:20:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2019-10-15 03:20:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2019-10-15 03:20:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2019-10-15 03:20:23,357 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 63 [2019-10-15 03:20:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:23,357 INFO L462 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2019-10-15 03:20:23,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:20:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2019-10-15 03:20:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 03:20:23,359 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:23,359 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] [2019-10-15 03:20:23,360 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:23,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:23,360 INFO L82 PathProgramCache]: Analyzing trace with hash 883460444, now seen corresponding path program 1 times [2019-10-15 03:20:23,360 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:23,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682982283] [2019-10-15 03:20:23,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:23,496 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 03:20:23,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682982283] [2019-10-15 03:20:23,496 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:23,497 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:20:23,497 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117874185] [2019-10-15 03:20:23,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:23,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:23,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:23,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:20:23,499 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand 6 states. [2019-10-15 03:20:23,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:23,715 INFO L93 Difference]: Finished difference Result 509 states and 583 transitions. [2019-10-15 03:20:23,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:20:23,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2019-10-15 03:20:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:23,721 INFO L225 Difference]: With dead ends: 509 [2019-10-15 03:20:23,721 INFO L226 Difference]: Without dead ends: 342 [2019-10-15 03:20:23,722 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 03:20:23,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-10-15 03:20:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 332. [2019-10-15 03:20:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2019-10-15 03:20:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 368 transitions. [2019-10-15 03:20:23,760 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 368 transitions. Word has length 72 [2019-10-15 03:20:23,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:23,760 INFO L462 AbstractCegarLoop]: Abstraction has 332 states and 368 transitions. [2019-10-15 03:20:23,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 368 transitions. [2019-10-15 03:20:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 03:20:23,762 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:23,762 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, 1] [2019-10-15 03:20:23,762 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:23,763 INFO L82 PathProgramCache]: Analyzing trace with hash 845753340, now seen corresponding path program 1 times [2019-10-15 03:20:23,764 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:23,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706217025] [2019-10-15 03:20:23,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:23,893 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 03:20:23,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706217025] [2019-10-15 03:20:23,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:23,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:23,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963013047] [2019-10-15 03:20:23,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:23,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:23,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:23,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:23,896 INFO L87 Difference]: Start difference. First operand 332 states and 368 transitions. Second operand 7 states. [2019-10-15 03:20:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:24,465 INFO L93 Difference]: Finished difference Result 525 states and 604 transitions. [2019-10-15 03:20:24,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:20:24,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2019-10-15 03:20:24,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:24,468 INFO L225 Difference]: With dead ends: 525 [2019-10-15 03:20:24,469 INFO L226 Difference]: Without dead ends: 358 [2019-10-15 03:20:24,470 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 03:20:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2019-10-15 03:20:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 331. [2019-10-15 03:20:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2019-10-15 03:20:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 365 transitions. [2019-10-15 03:20:24,510 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 365 transitions. Word has length 75 [2019-10-15 03:20:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:24,511 INFO L462 AbstractCegarLoop]: Abstraction has 331 states and 365 transitions. [2019-10-15 03:20:24,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:24,511 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 365 transitions. [2019-10-15 03:20:24,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 03:20:24,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:24,515 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, 1] [2019-10-15 03:20:24,516 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:24,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:24,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1405283872, now seen corresponding path program 1 times [2019-10-15 03:20:24,516 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:24,517 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162810653] [2019-10-15 03:20:24,517 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:24,517 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:24,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:24,690 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 03:20:24,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162810653] [2019-10-15 03:20:24,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731204967] [2019-10-15 03:20:24,691 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 03:20:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:24,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:20:24,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:24,966 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 03:20:24,967 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:25,163 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 03:20:25,163 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:20:25,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-15 03:20:25,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588086728] [2019-10-15 03:20:25,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:25,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:25,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:25,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:25,166 INFO L87 Difference]: Start difference. First operand 331 states and 365 transitions. Second operand 3 states. [2019-10-15 03:20:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:25,211 INFO L93 Difference]: Finished difference Result 473 states and 534 transitions. [2019-10-15 03:20:25,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:25,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-15 03:20:25,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:25,215 INFO L225 Difference]: With dead ends: 473 [2019-10-15 03:20:25,216 INFO L226 Difference]: Without dead ends: 470 [2019-10-15 03:20:25,216 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 181 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 03:20:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-15 03:20:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 463. [2019-10-15 03:20:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-10-15 03:20:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 522 transitions. [2019-10-15 03:20:25,259 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 522 transitions. Word has length 88 [2019-10-15 03:20:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:25,261 INFO L462 AbstractCegarLoop]: Abstraction has 463 states and 522 transitions. [2019-10-15 03:20:25,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 522 transitions. [2019-10-15 03:20:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:20:25,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:25,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:25,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:25,475 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:25,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1315830805, now seen corresponding path program 1 times [2019-10-15 03:20:25,476 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:25,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371080564] [2019-10-15 03:20:25,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:25,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:25,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:20:25,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371080564] [2019-10-15 03:20:25,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34198849] [2019-10-15 03:20:25,663 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 03:20:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:25,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 03:20:25,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:20:26,012 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 03:20:26,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:26,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 12] total 25 [2019-10-15 03:20:26,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064296824] [2019-10-15 03:20:26,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:20:26,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:26,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:20:26,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2019-10-15 03:20:26,815 INFO L87 Difference]: Start difference. First operand 463 states and 522 transitions. Second operand 11 states. [2019-10-15 03:20:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:27,714 INFO L93 Difference]: Finished difference Result 1005 states and 1170 transitions. [2019-10-15 03:20:27,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:20:27,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2019-10-15 03:20:27,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:27,720 INFO L225 Difference]: With dead ends: 1005 [2019-10-15 03:20:27,720 INFO L226 Difference]: Without dead ends: 567 [2019-10-15 03:20:27,722 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 275 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 03:20:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-15 03:20:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 556. [2019-10-15 03:20:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-15 03:20:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 622 transitions. [2019-10-15 03:20:27,761 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 622 transitions. Word has length 140 [2019-10-15 03:20:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:27,762 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 622 transitions. [2019-10-15 03:20:27,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:20:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 622 transitions. [2019-10-15 03:20:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 03:20:27,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:27,767 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 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 03:20:27,974 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:27,975 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:27,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1438529546, now seen corresponding path program 1 times [2019-10-15 03:20:27,976 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:27,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939338235] [2019-10-15 03:20:27,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 03:20:28,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939338235] [2019-10-15 03:20:28,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597058273] [2019-10-15 03:20:28,211 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 03:20:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:28,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:20:28,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:28,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:28,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 03:20:28,797 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:29,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 03:20:30,515 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:30,515 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-15 03:20:30,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061781961] [2019-10-15 03:20:30,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:20:30,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:20:30,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:20:30,518 INFO L87 Difference]: Start difference. First operand 556 states and 622 transitions. Second operand 14 states. [2019-10-15 03:20:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:32,838 INFO L93 Difference]: Finished difference Result 1379 states and 1613 transitions. [2019-10-15 03:20:32,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-15 03:20:32,839 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2019-10-15 03:20:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:32,845 INFO L225 Difference]: With dead ends: 1379 [2019-10-15 03:20:32,845 INFO L226 Difference]: Without dead ends: 848 [2019-10-15 03:20:32,853 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 349 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-10-15 03:20:32,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2019-10-15 03:20:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 805. [2019-10-15 03:20:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-10-15 03:20:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 921 transitions. [2019-10-15 03:20:32,908 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 921 transitions. Word has length 186 [2019-10-15 03:20:32,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:32,909 INFO L462 AbstractCegarLoop]: Abstraction has 805 states and 921 transitions. [2019-10-15 03:20:32,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:20:32,909 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 921 transitions. [2019-10-15 03:20:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 03:20:32,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:32,914 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, 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 03:20:33,118 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:33,119 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:33,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1963195477, now seen corresponding path program 1 times [2019-10-15 03:20:33,120 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:33,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970472883] [2019-10-15 03:20:33,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:33,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:33,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-15 03:20:33,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970472883] [2019-10-15 03:20:33,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482985042] [2019-10-15 03:20:33,538 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 03:20:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:33,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-15 03:20:33,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:33,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:33,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:20:34,177 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:34,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-15 03:20:35,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [257011247] [2019-10-15 03:20:35,625 INFO L162 IcfgInterpreter]: Started Sifa with 110 locations of interest [2019-10-15 03:20:35,625 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:20:35,631 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:20:35,639 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:20:35,640 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:20:43,157 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:20:44,681 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:20:44,803 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:44,938 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:45,064 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:45,324 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:45,601 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:45,784 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:45,957 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:46,314 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:20:46,487 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:46,642 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:46,755 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:46,858 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:47,002 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:47,011 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:20:47,283 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:20:47,285 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 550 for LOIs [2019-10-15 03:20:47,391 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:47,505 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:47,647 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:47,797 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:47,941 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:48,063 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:48,224 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:48,464 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:48,656 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 550 [2019-10-15 03:20:48,800 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:48,951 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,164 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:49,315 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,642 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,978 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:50,293 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:50,609 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:50,726 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,846 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,965 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,283 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,626 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,941 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,071 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,180 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,301 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,535 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:52,644 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,777 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,887 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,007 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,126 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,331 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:53,461 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:53,595 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:53,803 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:20:53,914 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,040 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,152 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,262 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,383 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,535 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:54,644 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:54,771 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,882 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,992 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:55,117 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:55,241 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:55,352 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:55,476 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:55,722 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:20:55,832 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:56,077 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:56,270 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:56,400 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:56,523 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570