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_spec4_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:19:20,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:19:20,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:19:20,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:19:20,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:19:20,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:19:20,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:19:20,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:19:20,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:19:20,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:19:20,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:19:20,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:19:20,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:19:20,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:19:20,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:19:20,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:19:20,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:19:20,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:19:20,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:19:20,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:19:20,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:19:20,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:19:20,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:19:20,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:19:20,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:19:20,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:19:20,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:19:20,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:19:20,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:19:20,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:19:20,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:19:20,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:19:20,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:19:20,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:19:20,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:19:20,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:19:20,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:19:20,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:19:20,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:19:20,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:19:20,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:19:20,255 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 [2019-10-07 15:19:20,270 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:19:20,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:19:20,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:19:20,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:19:20,272 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:19:20,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:19:20,272 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:19:20,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:19:20,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:19:20,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:19:20,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:19:20,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:19:20,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:19:20,273 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:19:20,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:19:20,274 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:19:20,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:19:20,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:19:20,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:19:20,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:19:20,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:19:20,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:19:20,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:19:20,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:19:20,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:19:20,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:19:20,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:19:20,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:19:20,277 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 [2019-10-07 15:19:20,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:19:20,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:19:20,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:19:20,590 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:19:20,591 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:19:20,591 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-10-07 15:19:20,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d218bf594/5d40bb1c43cb440baaa5a1ca84d80aa4/FLAGa2ac11d42 [2019-10-07 15:19:21,209 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:19:21,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-10-07 15:19:21,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d218bf594/5d40bb1c43cb440baaa5a1ca84d80aa4/FLAGa2ac11d42 [2019-10-07 15:19:21,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d218bf594/5d40bb1c43cb440baaa5a1ca84d80aa4 [2019-10-07 15:19:21,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:19:21,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:19:21,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:21,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:19:21,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:19:21,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:21" (1/1) ... [2019-10-07 15:19:21,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4709edc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:21, skipping insertion in model container [2019-10-07 15:19:21,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:21" (1/1) ... [2019-10-07 15:19:21,563 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:19:21,607 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:19:22,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:22,076 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:19:22,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:22,227 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:19:22,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22 WrapperNode [2019-10-07 15:19:22,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:22,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:19:22,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:19:22,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:19:22,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (1/1) ... [2019-10-07 15:19:22,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (1/1) ... [2019-10-07 15:19:22,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (1/1) ... [2019-10-07 15:19:22,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (1/1) ... [2019-10-07 15:19:22,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (1/1) ... [2019-10-07 15:19:22,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (1/1) ... [2019-10-07 15:19:22,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (1/1) ... [2019-10-07 15:19:22,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:19:22,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:19:22,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:19:22,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:19:22,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (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 [2019-10-07 15:19:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:19:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:19:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:22,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:22,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:19:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:19:22,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:19:22,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:19:22,419 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:19:22,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-07 15:19:22,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:22,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-07 15:19:22,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:19:22,421 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:19:22,423 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:19:22,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:19:22,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:19:22,424 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:19:22,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:19:22,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-07 15:19:22,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:19:22,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:19:22,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:19:22,425 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:19:22,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:19:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:19:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:19:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:19:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:19:22,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:19:22,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:19:22,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:19:22,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-07 15:19:22,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:22,428 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:19:22,428 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:19:22,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:19:22,429 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:19:22,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:19:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:19:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:19:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:19:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:19:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:19:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:19:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:19:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:19:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:19:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:19:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:19:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:19:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:19:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:19:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:19:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:19:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:19:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:19:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:19:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:19:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:19:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:19:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:19:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:19:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:19:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-07 15:19:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:19:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:19:22,436 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:19:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:19:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:22,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:19:22,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-07 15:19:22,438 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:19:22,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-07 15:19:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-07 15:19:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:19:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:19:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:19:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:19:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:19:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:19:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:19:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:19:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:19:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:19:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:19:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:19:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:19:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:19:24,177 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:19:24,178 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:19:24,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:24 BoogieIcfgContainer [2019-10-07 15:19:24,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:19:24,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:19:24,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:19:24,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:19:24,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:19:21" (1/3) ... [2019-10-07 15:19:24,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190569f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:24, skipping insertion in model container [2019-10-07 15:19:24,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:22" (2/3) ... [2019-10-07 15:19:24,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190569f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:24, skipping insertion in model container [2019-10-07 15:19:24,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:24" (3/3) ... [2019-10-07 15:19:24,190 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2019-10-07 15:19:24,203 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:19:24,213 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:19:24,227 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:19:24,256 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:19:24,256 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:19:24,256 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:19:24,257 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:19:24,257 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:19:24,257 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:19:24,257 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:19:24,258 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:19:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2019-10-07 15:19:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-07 15:19:24,291 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:24,292 INFO L385 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] [2019-10-07 15:19:24,294 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 932161007, now seen corresponding path program 1 times [2019-10-07 15:19:24,310 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:24,311 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,311 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,311 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:24,654 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,655 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:24,655 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:19:24,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:19:24,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:19:24,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:19:24,678 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 2 states. [2019-10-07 15:19:24,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:24,726 INFO L93 Difference]: Finished difference Result 243 states and 292 transitions. [2019-10-07 15:19:24,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:19:24,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-07 15:19:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:24,742 INFO L225 Difference]: With dead ends: 243 [2019-10-07 15:19:24,742 INFO L226 Difference]: Without dead ends: 122 [2019-10-07 15:19:24,747 INFO L606 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 [2019-10-07 15:19:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-10-07 15:19:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-10-07 15:19:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-07 15:19:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2019-10-07 15:19:24,809 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 42 [2019-10-07 15:19:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:24,810 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2019-10-07 15:19:24,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:19:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2019-10-07 15:19:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-07 15:19:24,815 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:24,816 INFO L385 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] [2019-10-07 15:19:24,816 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:24,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1254270614, now seen corresponding path program 1 times [2019-10-07 15:19:24,817 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:24,817 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,817 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,818 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:24,998 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,998 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:24,998 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:19:25,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:25,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:25,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:19:25,002 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand 3 states. [2019-10-07 15:19:25,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:25,049 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2019-10-07 15:19:25,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:25,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-07 15:19:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:25,056 INFO L225 Difference]: With dead ends: 201 [2019-10-07 15:19:25,057 INFO L226 Difference]: Without dead ends: 114 [2019-10-07 15:19:25,058 INFO L606 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 [2019-10-07 15:19:25,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-10-07 15:19:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-10-07 15:19:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-07 15:19:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2019-10-07 15:19:25,084 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 43 [2019-10-07 15:19:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:25,084 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2019-10-07 15:19:25,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2019-10-07 15:19:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-07 15:19:25,087 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:25,087 INFO L385 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] [2019-10-07 15:19:25,087 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash -72457433, now seen corresponding path program 1 times [2019-10-07 15:19:25,088 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:25,088 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,089 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,089 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:25,315 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,316 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:25,316 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:19:25,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:25,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:19:25,321 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand 7 states. [2019-10-07 15:19:25,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:25,681 INFO L93 Difference]: Finished difference Result 206 states and 237 transitions. [2019-10-07 15:19:25,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 15:19:25,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2019-10-07 15:19:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:25,684 INFO L225 Difference]: With dead ends: 206 [2019-10-07 15:19:25,685 INFO L226 Difference]: Without dead ends: 114 [2019-10-07 15:19:25,686 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:19:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-10-07 15:19:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-10-07 15:19:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-07 15:19:25,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2019-10-07 15:19:25,701 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 45 [2019-10-07 15:19:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:25,701 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2019-10-07 15:19:25,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:25,701 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2019-10-07 15:19:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-07 15:19:25,704 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:25,704 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:25,704 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:25,705 INFO L82 PathProgramCache]: Analyzing trace with hash 138210273, now seen corresponding path program 1 times [2019-10-07 15:19:25,705 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:25,705 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,706 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,706 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:25,876 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,876 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:25,877 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 15:19:25,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 15:19:25,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 15:19:25,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 15:19:25,878 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 5 states. [2019-10-07 15:19:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:26,414 INFO L93 Difference]: Finished difference Result 296 states and 347 transitions. [2019-10-07 15:19:26,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 15:19:26,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-07 15:19:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:26,420 INFO L225 Difference]: With dead ends: 296 [2019-10-07 15:19:26,421 INFO L226 Difference]: Without dead ends: 204 [2019-10-07 15:19:26,423 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-10-07 15:19:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 189. [2019-10-07 15:19:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2019-10-07 15:19:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 206 transitions. [2019-10-07 15:19:26,458 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 206 transitions. Word has length 62 [2019-10-07 15:19:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:26,459 INFO L462 AbstractCegarLoop]: Abstraction has 189 states and 206 transitions. [2019-10-07 15:19:26,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 15:19:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 206 transitions. [2019-10-07 15:19:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-07 15:19:26,462 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:26,462 INFO L385 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] [2019-10-07 15:19:26,462 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:26,463 INFO L82 PathProgramCache]: Analyzing trace with hash -2141093705, now seen corresponding path program 1 times [2019-10-07 15:19:26,463 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:26,463 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,463 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,463 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:26,586 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,587 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:26,587 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 15:19:26,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 15:19:26,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 15:19:26,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:19:26,588 INFO L87 Difference]: Start difference. First operand 189 states and 206 transitions. Second operand 10 states. [2019-10-07 15:19:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:27,083 INFO L93 Difference]: Finished difference Result 538 states and 613 transitions. [2019-10-07 15:19:27,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:19:27,084 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2019-10-07 15:19:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:27,093 INFO L225 Difference]: With dead ends: 538 [2019-10-07 15:19:27,093 INFO L226 Difference]: Without dead ends: 371 [2019-10-07 15:19:27,095 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:19:27,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-10-07 15:19:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 357. [2019-10-07 15:19:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2019-10-07 15:19:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2019-10-07 15:19:27,159 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 72 [2019-10-07 15:19:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:27,161 INFO L462 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2019-10-07 15:19:27,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 15:19:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2019-10-07 15:19:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-07 15:19:27,167 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:27,168 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:19:27,168 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:27,169 INFO L82 PathProgramCache]: Analyzing trace with hash -238332763, now seen corresponding path program 1 times [2019-10-07 15:19:27,169 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:27,169 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,169 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:27,169 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 15:19:27,498 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,499 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:27,499 INFO L95 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 [2019-10-07 15:19:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:27,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-07 15:19:27,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 15:19:27,963 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 15:19:28,456 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 15:19:28,457 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [14] total 26 [2019-10-07 15:19:28,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:19:28,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:19:28,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-10-07 15:19:28,459 INFO L87 Difference]: Start difference. First operand 357 states and 394 transitions. Second operand 14 states. [2019-10-07 15:19:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:29,739 INFO L93 Difference]: Finished difference Result 858 states and 952 transitions. [2019-10-07 15:19:29,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 15:19:29,740 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 115 [2019-10-07 15:19:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:29,745 INFO L225 Difference]: With dead ends: 858 [2019-10-07 15:19:29,746 INFO L226 Difference]: Without dead ends: 691 [2019-10-07 15:19:29,747 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-10-07 15:19:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-07 15:19:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 688. [2019-10-07 15:19:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-10-07 15:19:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 761 transitions. [2019-10-07 15:19:29,798 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 761 transitions. Word has length 115 [2019-10-07 15:19:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:29,798 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 761 transitions. [2019-10-07 15:19:29,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:19:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 761 transitions. [2019-10-07 15:19:29,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 15:19:29,804 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:29,805 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:19:30,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:30,011 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:30,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:30,012 INFO L82 PathProgramCache]: Analyzing trace with hash -13408920, now seen corresponding path program 1 times [2019-10-07 15:19:30,012 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:30,013 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:30,013 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:30,014 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 15:19:30,102 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:30,102 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:30,103 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 15:19:30,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 15:19:30,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 15:19:30,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 15:19:30,104 INFO L87 Difference]: Start difference. First operand 688 states and 761 transitions. Second operand 6 states. [2019-10-07 15:19:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:30,352 INFO L93 Difference]: Finished difference Result 703 states and 777 transitions. [2019-10-07 15:19:30,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 15:19:30,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2019-10-07 15:19:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:30,358 INFO L225 Difference]: With dead ends: 703 [2019-10-07 15:19:30,358 INFO L226 Difference]: Without dead ends: 700 [2019-10-07 15:19:30,359 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:19:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2019-10-07 15:19:30,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 688. [2019-10-07 15:19:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-10-07 15:19:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 759 transitions. [2019-10-07 15:19:30,419 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 759 transitions. Word has length 121 [2019-10-07 15:19:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:30,420 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 759 transitions. [2019-10-07 15:19:30,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 15:19:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 759 transitions. [2019-10-07 15:19:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 15:19:30,427 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:30,427 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 15:19:30,428 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:30,428 INFO L82 PathProgramCache]: Analyzing trace with hash 283819144, now seen corresponding path program 1 times [2019-10-07 15:19:30,428 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:30,428 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:30,429 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:30,429 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-07 15:19:30,550 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:30,550 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:30,550 INFO L95 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 [2019-10-07 15:19:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:30,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 15:19:30,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:30,844 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-07 15:19:31,047 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:19:31,047 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-10-07 15:19:31,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:31,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:31,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:31,049 INFO L87 Difference]: Start difference. First operand 688 states and 759 transitions. Second operand 3 states. [2019-10-07 15:19:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:31,153 INFO L93 Difference]: Finished difference Result 1354 states and 1496 transitions. [2019-10-07 15:19:31,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:31,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2019-10-07 15:19:31,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:31,159 INFO L225 Difference]: With dead ends: 1354 [2019-10-07 15:19:31,159 INFO L226 Difference]: Without dead ends: 688 [2019-10-07 15:19:31,161 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 250 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:31,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-10-07 15:19:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 638. [2019-10-07 15:19:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-07 15:19:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 675 transitions. [2019-10-07 15:19:31,203 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 675 transitions. Word has length 125 [2019-10-07 15:19:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:31,204 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 675 transitions. [2019-10-07 15:19:31,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 675 transitions. [2019-10-07 15:19:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 15:19:31,208 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:31,208 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:31,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:31,413 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:31,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:31,414 INFO L82 PathProgramCache]: Analyzing trace with hash -233038195, now seen corresponding path program 1 times [2019-10-07 15:19:31,414 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:31,414 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:31,414 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:31,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 15:19:31,676 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:31,677 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:31,677 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 15:19:31,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:19:31,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:19:31,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 15:19:31,680 INFO L87 Difference]: Start difference. First operand 638 states and 675 transitions. Second operand 14 states. [2019-10-07 15:19:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:32,126 INFO L93 Difference]: Finished difference Result 996 states and 1074 transitions. [2019-10-07 15:19:32,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 15:19:32,126 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 125 [2019-10-07 15:19:32,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:32,131 INFO L225 Difference]: With dead ends: 996 [2019-10-07 15:19:32,132 INFO L226 Difference]: Without dead ends: 666 [2019-10-07 15:19:32,133 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-10-07 15:19:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-07 15:19:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 628. [2019-10-07 15:19:32,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-07 15:19:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 661 transitions. [2019-10-07 15:19:32,173 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 661 transitions. Word has length 125 [2019-10-07 15:19:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:32,173 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 661 transitions. [2019-10-07 15:19:32,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:19:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 661 transitions. [2019-10-07 15:19:32,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-07 15:19:32,176 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:32,176 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:32,177 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:32,177 INFO L82 PathProgramCache]: Analyzing trace with hash 16149934, now seen corresponding path program 1 times [2019-10-07 15:19:32,177 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:32,178 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:32,178 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:32,178 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 15:19:32,473 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:32,474 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:32,474 INFO L95 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 [2019-10-07 15:19:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:32,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-07 15:19:32,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:32,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:33,164 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:33,571 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:33,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:34,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:34,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:34,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:34,851 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 15:19:35,072 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:19:35,073 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-10-07 15:19:35,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 15:19:35,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 15:19:35,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2019-10-07 15:19:35,075 INFO L87 Difference]: Start difference. First operand 628 states and 661 transitions. Second operand 12 states. [2019-10-07 15:19:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:36,761 INFO L93 Difference]: Finished difference Result 1164 states and 1264 transitions. [2019-10-07 15:19:36,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 15:19:36,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 131 [2019-10-07 15:19:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:36,766 INFO L225 Difference]: With dead ends: 1164 [2019-10-07 15:19:36,766 INFO L226 Difference]: Without dead ends: 764 [2019-10-07 15:19:36,769 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 238 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=305, Invalid=1765, Unknown=0, NotChecked=0, Total=2070 [2019-10-07 15:19:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-10-07 15:19:36,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 728. [2019-10-07 15:19:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2019-10-07 15:19:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 781 transitions. [2019-10-07 15:19:36,817 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 781 transitions. Word has length 131 [2019-10-07 15:19:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:36,817 INFO L462 AbstractCegarLoop]: Abstraction has 728 states and 781 transitions. [2019-10-07 15:19:36,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 15:19:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 781 transitions. [2019-10-07 15:19:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-07 15:19:36,821 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:36,821 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:19:37,026 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:37,027 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:37,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1819701009, now seen corresponding path program 1 times [2019-10-07 15:19:37,028 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:37,028 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:37,028 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:37,028 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 15:19:37,283 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:37,283 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:37,283 INFO L95 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 [2019-10-07 15:19:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:37,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-07 15:19:37,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:37,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:37,728 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:38,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 15:19:38,500 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:19:38,529 INFO L162 IcfgInterpreter]: Started Sifa with 106 locations of interest [2019-10-07 15:19:38,530 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:19:38,536 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:19:38,544 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:19:38,545 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:19:48,688 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-07 15:19:50,488 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:19:50,618 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:50,752 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:50,879 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:51,115 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:51,371 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:51,561 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:51,846 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:52,288 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-07 15:19:52,454 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:52,603 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:52,715 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:52,864 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:53,014 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:53,022 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-07 15:19:53,227 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-10-07 15:19:53,341 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:53,455 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:53,604 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:53,721 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:53,955 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:54,074 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:54,311 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:54,547 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 542 [2019-10-07 15:19:54,803 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:54,927 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,050 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,168 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:55,282 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,387 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,504 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:55,611 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,731 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,848 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:55,951 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:56,053 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:56,168 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:56,377 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:56,519 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:56,621 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:56,835 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:57,149 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:57,267 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:57,482 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:57,684 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:57,801 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:57,980 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:58,141 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:58,260 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:58,460 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:19:58,569 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:58,749 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:58,862 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:58,971 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:59,106 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:59,244 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:19:59,372 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:19:59,492 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,701 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:59,811 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,935 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:00,153 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:00,262 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:00,386 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:00,503 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:00,612 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:00,731 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:00,840 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:00,962 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,090 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:01,216 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,328 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,448 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:01,652 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 560 DAG size of output: 556 [2019-10-07 15:20:01,772 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,925 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:02,061 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,171 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,298 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:02,535 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:02,644 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:02,763 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:03,204 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:03,345 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:03,464 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:03,573 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:03,691 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:03,816 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:04,029 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:04,139 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,260 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,488 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:04,600 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,729 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,841 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,951 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,082 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,285 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:05,392 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:05,544 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,733 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 560 DAG size of output: 556 [2019-10-07 15:20:05,842 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,971 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:06,189 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:06,297 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:06,414 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:06,876 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:07,070 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:07,189 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:07,297 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:07,405 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:07,522 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:07,725 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:07,832 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:07,956 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:08,172 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:08,282 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:08,413 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:08,521 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:08,629 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:08,744 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:08,953 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:09,062 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,184 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,399 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:09,509 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,630 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,741 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,850 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,967 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:10,165 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:10,273 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:10,396 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:10,602 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:10,714 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:10,832 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:11,025 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:11,133 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:11,250 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:11,357 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:11,466 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:11,590 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:11,799 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:11,909 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,029 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,227 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:12,335 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:12,457 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,653 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:12,762 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:12,882 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,072 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 563 DAG size of output: 556 [2019-10-07 15:20:13,185 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,307 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,508 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 558 [2019-10-07 15:20:13,619 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:13,743 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:13,960 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 558 [2019-10-07 15:20:14,070 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:14,191 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:14,391 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 558 [2019-10-07 15:20:14,502 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:14,623 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:14,826 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:14,936 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,197 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,466 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:15,572 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,689 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,802 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,911 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:16,032 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:16,243 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:16,350 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:16,480 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,677 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:16,787 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:16,909 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,016 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:17,123 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:17,241 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,433 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:17,540 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:17,663 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,850 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 560 DAG size of output: 556 [2019-10-07 15:20:17,960 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:18,082 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:18,285 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:18,392 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:18,509 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:18,702 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:18,812 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:18,928 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:19,127 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:19,232 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:19,351 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:19,543 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:19,653 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:19,768 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:19,873 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:19,983 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:20,097 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:20,218 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,327 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,445 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,558 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,686 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,806 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:20,809 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 544 for LOIs [2019-10-07 15:20:20,924 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:21,138 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:21,142 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 542 for LOIs [2019-10-07 15:20:21,247 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:21,462 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:21,573 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:21,791 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:22,108 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:22,214 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 551 [2019-10-07 15:20:22,433 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:22,589 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:22,865 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:23,220 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:23,595 WARN L191 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:23,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:20:23,891 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 15:20:23,900 INFO L168 Benchmark]: Toolchain (without parser) took 62353.47 ms. Allocated memory was 145.2 MB in the beginning and 1.1 GB in the end (delta: 985.1 MB). Free memory was 102.2 MB in the beginning and 209.9 MB in the end (delta: -107.7 MB). Peak memory consumption was 877.5 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:23,900 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 15:20:23,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.09 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.0 MB in the beginning and 168.7 MB in the end (delta: -66.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:23,901 INFO L168 Benchmark]: Boogie Preprocessor took 97.20 ms. Allocated memory is still 202.9 MB. Free memory was 168.7 MB in the beginning and 164.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:23,901 INFO L168 Benchmark]: RCFGBuilder took 1850.50 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 164.6 MB in the beginning and 141.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:23,902 INFO L168 Benchmark]: TraceAbstraction took 59716.98 ms. Allocated memory was 235.9 MB in the beginning and 1.1 GB in the end (delta: 894.4 MB). Free memory was 141.0 MB in the beginning and 209.9 MB in the end (delta: -68.8 MB). Peak memory consumption was 825.6 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:23,904 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.09 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.0 MB in the beginning and 168.7 MB in the end (delta: -66.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.20 ms. Allocated memory is still 202.9 MB. Free memory was 168.7 MB in the beginning and 164.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1850.50 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 164.6 MB in the beginning and 141.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 59716.98 ms. Allocated memory was 235.9 MB in the beginning and 1.1 GB in the end (delta: 894.4 MB). Free memory was 141.0 MB in the beginning and 209.9 MB in the end (delta: -68.8 MB). Peak memory consumption was 825.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...