/usr/bin/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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:37:51,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:37:51,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:37:51,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:37:51,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:37:51,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:37:51,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:37:51,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:37:51,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:37:51,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:37:51,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:37:51,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:37:51,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:37:51,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:37:51,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:37:51,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:37:51,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:37:51,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:37:51,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:37:51,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:37:51,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:37:51,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:37:51,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:37:51,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:37:51,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:37:51,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:37:51,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:37:51,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:37:51,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:37:51,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:37:51,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:37:51,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:37:51,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:37:51,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:37:51,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:37:51,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:37:51,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:37:51,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:37:51,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:37:51,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:37:51,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:37:51,222 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 [2019-11-07 04:37:51,236 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:37:51,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:37:51,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:37:51,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:37:51,237 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:37:51,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:37:51,238 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:37:51,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:37:51,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:37:51,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:37:51,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:37:51,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:37:51,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:37:51,239 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:37:51,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:37:51,239 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:37:51,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:37:51,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:37:51,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:37:51,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:37:51,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:37:51,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:37:51,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:37:51,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:37:51,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:37:51,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:37:51,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:37:51,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:37:51,242 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 [2019-11-07 04:37:51,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:37:51,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:37:51,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:37:51,580 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:37:51,580 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:37:51,581 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-11-07 04:37:51,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c802f6c3f/42e3989d173b476683dea0826d5248ed/FLAGc12ae3d97 [2019-11-07 04:37:52,185 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:37:52,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-11-07 04:37:52,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c802f6c3f/42e3989d173b476683dea0826d5248ed/FLAGc12ae3d97 [2019-11-07 04:37:52,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c802f6c3f/42e3989d173b476683dea0826d5248ed [2019-11-07 04:37:52,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:37:52,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:37:52,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:37:52,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:37:52,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:37:52,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:37:52" (1/1) ... [2019-11-07 04:37:52,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb53db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:52, skipping insertion in model container [2019-11-07 04:37:52,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:37:52" (1/1) ... [2019-11-07 04:37:52,525 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:37:52,594 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:37:53,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:37:53,105 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:37:53,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:37:53,261 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:37:53,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53 WrapperNode [2019-11-07 04:37:53,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:37:53,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:37:53,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:37:53,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:37:53,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (1/1) ... [2019-11-07 04:37:53,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (1/1) ... [2019-11-07 04:37:53,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (1/1) ... [2019-11-07 04:37:53,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (1/1) ... [2019-11-07 04:37:53,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (1/1) ... [2019-11-07 04:37:53,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (1/1) ... [2019-11-07 04:37:53,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (1/1) ... [2019-11-07 04:37:53,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:37:53,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:37:53,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:37:53,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:37:53,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (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 [2019-11-07 04:37:53,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:37:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:37:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:37:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:37:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:37:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:37:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:37:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:37:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:37:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:37:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:37:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:37:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:37:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:37:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:37:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:37:53,451 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:37:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:37:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:37:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:37:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:37:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:37:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:37:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:37:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:37:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:37:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:37:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:37:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:37:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2019-11-07 04:37:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2019-11-07 04:37:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2019-11-07 04:37:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2019-11-07 04:37:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2019-11-07 04:37:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2019-11-07 04:37:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:37:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2019-11-07 04:37:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2019-11-07 04:37:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:37:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:37:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:37:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:37:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:37:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:37:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:37:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 04:37:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:37:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:37:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:37:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:37:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:37:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:37:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:37:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:37:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:37:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:37:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:37:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:37:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:37:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:37:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:37:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:37:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:37:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:37:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:37:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:37:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:37:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:37:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:37:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:37:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:37:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:37:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:37:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:37:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:37:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:37:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:37:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:37:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:37:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:37:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:37:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:37:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:37:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:37:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:37:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:37:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:37:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:37:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:37:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:37:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:37:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:37:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:37:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 04:37:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:37:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:37:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:37:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:37:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:37:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:37:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2019-11-07 04:37:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:37:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2019-11-07 04:37:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2019-11-07 04:37:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:37:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2019-11-07 04:37:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2019-11-07 04:37:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:37:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2019-11-07 04:37:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2019-11-07 04:37:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2019-11-07 04:37:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:37:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:37:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:37:55,257 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:37:55,257 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:37:55,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:37:55 BoogieIcfgContainer [2019-11-07 04:37:55,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:37:55,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:37:55,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:37:55,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:37:55,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:37:52" (1/3) ... [2019-11-07 04:37:55,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37677da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:37:55, skipping insertion in model container [2019-11-07 04:37:55,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:53" (2/3) ... [2019-11-07 04:37:55,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37677da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:37:55, skipping insertion in model container [2019-11-07 04:37:55,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:37:55" (3/3) ... [2019-11-07 04:37:55,267 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.c [2019-11-07 04:37:55,277 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:37:55,286 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:37:55,298 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:37:55,325 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:37:55,325 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:37:55,326 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:37:55,326 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:37:55,327 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:37:55,327 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:37:55,327 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:37:55,327 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:37:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2019-11-07 04:37:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-07 04:37:55,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:55,366 INFO L410 BasicCegarLoop]: trace histogram [6, 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] [2019-11-07 04:37:55,367 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:55,374 INFO L82 PathProgramCache]: Analyzing trace with hash 405742149, now seen corresponding path program 1 times [2019-11-07 04:37:55,386 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:55,386 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221390107] [2019-11-07 04:37:55,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:37:55,850 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221390107] [2019-11-07 04:37:55,851 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:55,851 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:37:55,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876527957] [2019-11-07 04:37:55,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:37:55,858 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:55,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:37:55,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:37:55,876 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 2 states. [2019-11-07 04:37:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:55,933 INFO L93 Difference]: Finished difference Result 348 states and 438 transitions. [2019-11-07 04:37:55,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:37:55,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 76 [2019-11-07 04:37:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:55,951 INFO L225 Difference]: With dead ends: 348 [2019-11-07 04:37:55,951 INFO L226 Difference]: Without dead ends: 183 [2019-11-07 04:37:55,959 INFO L630 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 [2019-11-07 04:37:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-11-07 04:37:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2019-11-07 04:37:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-11-07 04:37:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2019-11-07 04:37:56,027 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 76 [2019-11-07 04:37:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:56,030 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2019-11-07 04:37:56,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:37:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2019-11-07 04:37:56,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 04:37:56,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:56,036 INFO L410 BasicCegarLoop]: trace histogram [6, 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] [2019-11-07 04:37:56,037 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:56,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:56,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1660428068, now seen corresponding path program 1 times [2019-11-07 04:37:56,038 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:56,038 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586032561] [2019-11-07 04:37:56,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:37:56,254 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586032561] [2019-11-07 04:37:56,254 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:56,254 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:37:56,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116622535] [2019-11-07 04:37:56,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:37:56,260 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:56,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:37:56,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:37:56,261 INFO L87 Difference]: Start difference. First operand 183 states and 224 transitions. Second operand 3 states. [2019-11-07 04:37:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:56,326 INFO L93 Difference]: Finished difference Result 294 states and 359 transitions. [2019-11-07 04:37:56,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:37:56,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-11-07 04:37:56,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:56,334 INFO L225 Difference]: With dead ends: 294 [2019-11-07 04:37:56,340 INFO L226 Difference]: Without dead ends: 175 [2019-11-07 04:37:56,342 INFO L630 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 [2019-11-07 04:37:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-11-07 04:37:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-11-07 04:37:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-11-07 04:37:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 213 transitions. [2019-11-07 04:37:56,381 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 213 transitions. Word has length 77 [2019-11-07 04:37:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:56,382 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 213 transitions. [2019-11-07 04:37:56,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:37:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 213 transitions. [2019-11-07 04:37:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-07 04:37:56,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:56,393 INFO L410 BasicCegarLoop]: trace histogram [6, 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] [2019-11-07 04:37:56,393 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:56,394 INFO L82 PathProgramCache]: Analyzing trace with hash -2063576827, now seen corresponding path program 1 times [2019-11-07 04:37:56,394 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:56,394 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927619263] [2019-11-07 04:37:56,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:37:56,663 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927619263] [2019-11-07 04:37:56,663 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:56,663 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:37:56,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779093904] [2019-11-07 04:37:56,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:37:56,665 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:56,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:37:56,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:37:56,666 INFO L87 Difference]: Start difference. First operand 175 states and 213 transitions. Second operand 9 states. [2019-11-07 04:37:57,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:57,917 INFO L93 Difference]: Finished difference Result 499 states and 622 transitions. [2019-11-07 04:37:57,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:37:57,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2019-11-07 04:37:57,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:57,923 INFO L225 Difference]: With dead ends: 499 [2019-11-07 04:37:57,923 INFO L226 Difference]: Without dead ends: 363 [2019-11-07 04:37:57,924 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:37:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2019-11-07 04:37:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 351. [2019-11-07 04:37:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-11-07 04:37:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 437 transitions. [2019-11-07 04:37:57,974 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 437 transitions. Word has length 81 [2019-11-07 04:37:57,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:57,975 INFO L462 AbstractCegarLoop]: Abstraction has 351 states and 437 transitions. [2019-11-07 04:37:57,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:37:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 437 transitions. [2019-11-07 04:37:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-07 04:37:57,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:57,979 INFO L410 BasicCegarLoop]: trace histogram [6, 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] [2019-11-07 04:37:57,982 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:57,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1406139330, now seen corresponding path program 1 times [2019-11-07 04:37:57,983 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:57,983 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294819174] [2019-11-07 04:37:57,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 04:37:58,159 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294819174] [2019-11-07 04:37:58,161 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:58,161 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:37:58,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855090055] [2019-11-07 04:37:58,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:37:58,164 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:58,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:37:58,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:37:58,164 INFO L87 Difference]: Start difference. First operand 351 states and 437 transitions. Second operand 7 states. [2019-11-07 04:37:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:59,122 INFO L93 Difference]: Finished difference Result 928 states and 1262 transitions. [2019-11-07 04:37:59,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:37:59,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2019-11-07 04:37:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:59,130 INFO L225 Difference]: With dead ends: 928 [2019-11-07 04:37:59,131 INFO L226 Difference]: Without dead ends: 616 [2019-11-07 04:37:59,133 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:37:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-11-07 04:37:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 559. [2019-11-07 04:37:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2019-11-07 04:37:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 709 transitions. [2019-11-07 04:37:59,216 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 709 transitions. Word has length 86 [2019-11-07 04:37:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:59,216 INFO L462 AbstractCegarLoop]: Abstraction has 559 states and 709 transitions. [2019-11-07 04:37:59,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:37:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 709 transitions. [2019-11-07 04:37:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 04:37:59,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:59,222 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:37:59,222 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:59,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:59,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1497411186, now seen corresponding path program 1 times [2019-11-07 04:37:59,222 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:59,223 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485172615] [2019-11-07 04:37:59,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:37:59,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485172615] [2019-11-07 04:37:59,485 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:59,486 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-07 04:37:59,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336801703] [2019-11-07 04:37:59,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:37:59,487 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:59,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:37:59,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:37:59,488 INFO L87 Difference]: Start difference. First operand 559 states and 709 transitions. Second operand 14 states. [2019-11-07 04:38:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:38:01,422 INFO L93 Difference]: Finished difference Result 1584 states and 2094 transitions. [2019-11-07 04:38:01,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:38:01,422 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 114 [2019-11-07 04:38:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:38:01,430 INFO L225 Difference]: With dead ends: 1584 [2019-11-07 04:38:01,430 INFO L226 Difference]: Without dead ends: 1064 [2019-11-07 04:38:01,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:38:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2019-11-07 04:38:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1042. [2019-11-07 04:38:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2019-11-07 04:38:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1358 transitions. [2019-11-07 04:38:01,511 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1358 transitions. Word has length 114 [2019-11-07 04:38:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:38:01,512 INFO L462 AbstractCegarLoop]: Abstraction has 1042 states and 1358 transitions. [2019-11-07 04:38:01,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:38:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1358 transitions. [2019-11-07 04:38:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 04:38:01,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:38:01,516 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:38:01,516 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:38:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:38:01,517 INFO L82 PathProgramCache]: Analyzing trace with hash 600472367, now seen corresponding path program 1 times [2019-11-07 04:38:01,517 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:38:01,517 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185554669] [2019-11-07 04:38:01,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:38:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:38:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:38:01,712 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185554669] [2019-11-07 04:38:01,713 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:38:01,713 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:38:01,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773208452] [2019-11-07 04:38:01,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:38:01,715 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:38:01,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:38:01,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:38:01,716 INFO L87 Difference]: Start difference. First operand 1042 states and 1358 transitions. Second operand 9 states. [2019-11-07 04:38:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:38:03,189 INFO L93 Difference]: Finished difference Result 3312 states and 4435 transitions. [2019-11-07 04:38:03,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:38:03,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2019-11-07 04:38:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:38:03,209 INFO L225 Difference]: With dead ends: 3312 [2019-11-07 04:38:03,209 INFO L226 Difference]: Without dead ends: 2517 [2019-11-07 04:38:03,213 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:38:03,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2019-11-07 04:38:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2187. [2019-11-07 04:38:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2019-11-07 04:38:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2862 transitions. [2019-11-07 04:38:03,375 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2862 transitions. Word has length 117 [2019-11-07 04:38:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:38:03,376 INFO L462 AbstractCegarLoop]: Abstraction has 2187 states and 2862 transitions. [2019-11-07 04:38:03,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:38:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2862 transitions. [2019-11-07 04:38:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-07 04:38:03,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:38:03,381 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:38:03,381 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:38:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:38:03,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1485618468, now seen corresponding path program 1 times [2019-11-07 04:38:03,382 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:38:03,382 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727285108] [2019-11-07 04:38:03,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:38:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:38:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 04:38:03,471 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727285108] [2019-11-07 04:38:03,472 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159988620] [2019-11-07 04:38:03,472 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 [2019-11-07 04:38:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:38:03,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:38:03,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:38:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 04:38:03,814 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:38:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 04:38:04,136 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:38:04,136 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-11-07 04:38:04,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495688099] [2019-11-07 04:38:04,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:38:04,138 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:38:04,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:38:04,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:38:04,141 INFO L87 Difference]: Start difference. First operand 2187 states and 2862 transitions. Second operand 3 states. [2019-11-07 04:38:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:38:04,294 INFO L93 Difference]: Finished difference Result 4657 states and 6283 transitions. [2019-11-07 04:38:04,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:38:04,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-11-07 04:38:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:38:04,315 INFO L225 Difference]: With dead ends: 4657 [2019-11-07 04:38:04,316 INFO L226 Difference]: Without dead ends: 2509 [2019-11-07 04:38:04,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:38:04,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2019-11-07 04:38:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2509. [2019-11-07 04:38:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2509 states. [2019-11-07 04:38:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3269 transitions. [2019-11-07 04:38:04,549 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3269 transitions. Word has length 163 [2019-11-07 04:38:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:38:04,551 INFO L462 AbstractCegarLoop]: Abstraction has 2509 states and 3269 transitions. [2019-11-07 04:38:04,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:38:04,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3269 transitions. [2019-11-07 04:38:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 04:38:04,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:38:04,559 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:38:04,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:38:04,768 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:38:04,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:38:04,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1870702604, now seen corresponding path program 1 times [2019-11-07 04:38:04,769 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:38:04,769 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286875812] [2019-11-07 04:38:04,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:38:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:38:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-07 04:38:05,074 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286875812] [2019-11-07 04:38:05,074 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511551821] [2019-11-07 04:38:05,075 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 [2019-11-07 04:38:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:38:05,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 04:38:05,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:38:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 04:38:05,464 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:38:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-07 04:38:05,948 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1494803087] [2019-11-07 04:38:05,975 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2019-11-07 04:38:05,976 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:38:05,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:38:05,989 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:38:05,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:38:19,373 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 482 [2019-11-07 04:38:20,808 WARN L191 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:38:20,951 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-11-07 04:38:21,233 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-11-07 04:38:21,436 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-11-07 04:38:21,766 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-11-07 04:38:21,884 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-11-07 04:38:21,999 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-11-07 04:38:22,265 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-11-07 04:38:22,283 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 211 for LOIs [2019-11-07 04:38:22,304 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 582 for LOIs [2019-11-07 04:38:22,534 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:38:22,664 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:38:22,886 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-11-07 04:38:23,014 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:38:23,161 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:38:23,360 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-11-07 04:38:23,488 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:38:23,605 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:38:23,814 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-11-07 04:38:23,934 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:38:24,051 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:38:24,225 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-11-07 04:38:24,661 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 632 DAG size of output: 630 [2019-11-07 04:38:24,811 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:38:24,993 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:38:25,302 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 632 DAG size of output: 630 [2019-11-07 04:38:25,459 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:38:25,621 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:38:25,892 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 632 DAG size of output: 630 [2019-11-07 04:38:26,081 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:38:26,245 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:38:26,533 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 632 DAG size of output: 630 [2019-11-07 04:38:26,757 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:38:27,051 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-11-07 04:38:27,341 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-11-07 04:38:27,532 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-11-07 04:38:27,708 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 634 [2019-11-07 04:38:27,855 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-11-07 04:38:28,008 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-11-07 04:38:28,219 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 634 [2019-11-07 04:38:28,453 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 639 [2019-11-07 04:38:28,625 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 639 [2019-11-07 04:38:28,829 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 639 [2019-11-07 04:38:28,982 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 639 [2019-11-07 04:38:29,141 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 639 [2019-11-07 04:38:29,507 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 639 [2019-11-07 04:38:29,581 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 587 for LOIs [2019-11-07 04:38:29,794 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 587 [2019-11-07 04:38:30,008 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 587 [2019-11-07 04:38:30,166 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 603 [2019-11-07 04:38:30,371 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 587 [2019-11-07 04:38:30,576 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 587 [2019-11-07 04:38:30,821 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 603 [2019-11-07 04:38:30,831 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 589 for LOIs [2019-11-07 04:38:31,084 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 600 [2019-11-07 04:38:31,557 WARN L191 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 601