java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:20:48,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:20:48,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:20:48,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:20:48,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:20:48,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:20:48,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:20:48,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:20:48,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:20:48,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:20:48,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:20:48,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:20:48,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:20:48,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:20:48,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:20:48,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:20:48,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:20:48,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:20:48,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:20:48,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:20:48,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:20:48,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:20:48,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:20:48,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:20:48,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:20:48,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:20:48,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:20:48,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:20:48,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:20:48,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:20:48,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:20:48,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:20:48,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:20:48,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:20:48,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:20:48,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:20:48,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:20:48,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:20:48,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:20:48,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:20:48,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:20:48,784 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 15:20:48,798 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:20:48,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:20:48,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:20:48,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:20:48,800 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:20:48,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:20:48,800 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:20:48,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:20:48,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:20:48,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:20:48,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:20:48,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:20:48,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:20:48,802 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:20:48,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:20:48,802 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:20:48,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:20:48,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:20:48,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:20:48,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:20:48,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:20:48,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:20:48,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:20:48,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:20:48,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:20:48,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:20:48,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:20:48,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:20:48,805 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 15:20:49,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:20:49,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:20:49,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:20:49,111 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:20:49,111 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:20:49,112 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c [2019-10-07 15:20:49,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619482835/213b24a552154c26aa0418bc97a46bdc/FLAG5fa165ea9 [2019-10-07 15:20:49,714 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:20:49,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c [2019-10-07 15:20:49,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619482835/213b24a552154c26aa0418bc97a46bdc/FLAG5fa165ea9 [2019-10-07 15:20:50,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619482835/213b24a552154c26aa0418bc97a46bdc [2019-10-07 15:20:50,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:20:50,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:20:50,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:20:50,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:20:50,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:20:50,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:50,215 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 03:20:50, skipping insertion in model container [2019-10-07 15:20:50,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:50,222 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:20:50,263 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:20:50,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:20:50,732 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:20:50,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:20:50,905 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:20:50,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50 WrapperNode [2019-10-07 15:20:50,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:20:50,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:20:50,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:20:50,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:20:50,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:50,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:50,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:50,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:50,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:50,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:50,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (1/1) ... [2019-10-07 15:20:51,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:20:51,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:20:51,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:20:51,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:20:51,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (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 15:20:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:20:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:20:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:20:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:20:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:20:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:20:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:20:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:20:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:20:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:20:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:20:51,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-07 15:20:51,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:20:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:20:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:20:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:20:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:20:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:20:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:20:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:20:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:20:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:20:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:20:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:20:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:20:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:20:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:20:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:20:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:20:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:20:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:20:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:20:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:20:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:20:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:20:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:20:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-07 15:20:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-07 15:20:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-07 15:20:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:20:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:20:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:20:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:20:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:20:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:20:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:20:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:20:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:20:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:20:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:20:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:20:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:20:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:20:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:20:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:20:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:20:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:20:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:20:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:20:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:20:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:20:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:20:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:20:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:20:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:20:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:20:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-07 15:20:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-07 15:20:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:20:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-07 15:20:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:20:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:20:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:20:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:20:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:20:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:20:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:20:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:20:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-07 15:20:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:20:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:20:51,108 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:20:51,108 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:20:51,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:20:51,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:20:51,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:20:52,635 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:20:52,636 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:20:52,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:20:52 BoogieIcfgContainer [2019-10-07 15:20:52,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:20:52,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:20:52,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:20:52,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:20:52,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:20:50" (1/3) ... [2019-10-07 15:20:52,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a04da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:20:52, skipping insertion in model container [2019-10-07 15:20:52,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:50" (2/3) ... [2019-10-07 15:20:52,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a04da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:20:52, skipping insertion in model container [2019-10-07 15:20:52,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:20:52" (3/3) ... [2019-10-07 15:20:52,645 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product33.cil.c [2019-10-07 15:20:52,655 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:20:52,664 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:20:52,675 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:20:52,702 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:20:52,702 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:20:52,703 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:20:52,703 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:20:52,703 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:20:52,703 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:20:52,703 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:20:52,703 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:20:52,723 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2019-10-07 15:20:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-07 15:20:52,731 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:52,732 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:20:52,734 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:52,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2056875222, now seen corresponding path program 1 times [2019-10-07 15:20:52,747 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:52,748 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:52,748 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:52,748 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:20:53,111 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:53,112 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:53,112 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:20:53,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:20:53,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:20:53,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:20:53,138 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2019-10-07 15:20:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:53,201 INFO L93 Difference]: Finished difference Result 188 states and 227 transitions. [2019-10-07 15:20:53,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:20:53,203 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-07 15:20:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:53,219 INFO L225 Difference]: With dead ends: 188 [2019-10-07 15:20:53,220 INFO L226 Difference]: Without dead ends: 96 [2019-10-07 15:20:53,239 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 15:20:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-10-07 15:20:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2019-10-07 15:20:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-10-07 15:20:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2019-10-07 15:20:53,319 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 52 [2019-10-07 15:20:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:53,321 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2019-10-07 15:20:53,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:20:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2019-10-07 15:20:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-07 15:20:53,328 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:53,328 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:20:53,328 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:53,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:53,330 INFO L82 PathProgramCache]: Analyzing trace with hash -294944279, now seen corresponding path program 1 times [2019-10-07 15:20:53,330 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:53,330 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:53,331 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:53,331 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:20:53,461 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:53,461 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:53,461 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:20:53,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:20:53,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:20:53,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:20:53,464 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 3 states. [2019-10-07 15:20:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:53,483 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2019-10-07 15:20:53,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:20:53,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-07 15:20:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:53,486 INFO L225 Difference]: With dead ends: 146 [2019-10-07 15:20:53,486 INFO L226 Difference]: Without dead ends: 88 [2019-10-07 15:20:53,488 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 15:20:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-07 15:20:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2019-10-07 15:20:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-10-07 15:20:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2019-10-07 15:20:53,500 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 53 [2019-10-07 15:20:53,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:53,501 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2019-10-07 15:20:53,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:20:53,501 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2019-10-07 15:20:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-07 15:20:53,503 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:53,504 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:20:53,504 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:53,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:53,504 INFO L82 PathProgramCache]: Analyzing trace with hash -385340335, now seen corresponding path program 1 times [2019-10-07 15:20:53,505 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:53,505 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:53,505 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:53,505 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:20:53,651 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:53,651 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:53,651 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:20:53,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:20:53,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:20:53,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:20:53,652 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 3 states. [2019-10-07 15:20:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:53,668 INFO L93 Difference]: Finished difference Result 151 states and 172 transitions. [2019-10-07 15:20:53,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:20:53,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-10-07 15:20:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:53,671 INFO L225 Difference]: With dead ends: 151 [2019-10-07 15:20:53,671 INFO L226 Difference]: Without dead ends: 88 [2019-10-07 15:20:53,672 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 15:20:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-07 15:20:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2019-10-07 15:20:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-10-07 15:20:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2019-10-07 15:20:53,684 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 55 [2019-10-07 15:20:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:53,686 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2019-10-07 15:20:53,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:20:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2019-10-07 15:20:53,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-07 15:20:53,688 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:53,688 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:20:53,688 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:53,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:53,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2028163054, now seen corresponding path program 1 times [2019-10-07 15:20:53,689 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:53,689 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:53,689 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:53,690 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:20:53,817 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:53,818 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:53,818 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 15:20:53,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 15:20:53,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 15:20:53,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 15:20:53,819 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 5 states. [2019-10-07 15:20:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:54,251 INFO L93 Difference]: Finished difference Result 228 states and 267 transitions. [2019-10-07 15:20:54,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 15:20:54,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2019-10-07 15:20:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:54,254 INFO L225 Difference]: With dead ends: 228 [2019-10-07 15:20:54,254 INFO L226 Difference]: Without dead ends: 165 [2019-10-07 15:20:54,255 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:20:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-10-07 15:20:54,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 150. [2019-10-07 15:20:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-07 15:20:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2019-10-07 15:20:54,279 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 63 [2019-10-07 15:20:54,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:54,279 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2019-10-07 15:20:54,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 15:20:54,280 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2019-10-07 15:20:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-07 15:20:54,283 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:54,284 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:20:54,284 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:54,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:54,284 INFO L82 PathProgramCache]: Analyzing trace with hash -901395017, now seen corresponding path program 1 times [2019-10-07 15:20:54,287 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:54,287 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:54,288 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:54,288 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:20:54,587 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:54,588 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:54,588 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-07 15:20:54,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 15:20:54,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 15:20:54,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-07 15:20:54,591 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand 12 states. [2019-10-07 15:20:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:55,441 INFO L93 Difference]: Finished difference Result 407 states and 468 transitions. [2019-10-07 15:20:55,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-07 15:20:55,442 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2019-10-07 15:20:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:55,446 INFO L225 Difference]: With dead ends: 407 [2019-10-07 15:20:55,447 INFO L226 Difference]: Without dead ends: 282 [2019-10-07 15:20:55,448 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-07 15:20:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2019-10-07 15:20:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2019-10-07 15:20:55,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2019-10-07 15:20:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 309 transitions. [2019-10-07 15:20:55,484 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 309 transitions. Word has length 72 [2019-10-07 15:20:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:55,484 INFO L462 AbstractCegarLoop]: Abstraction has 270 states and 309 transitions. [2019-10-07 15:20:55,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 15:20:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 309 transitions. [2019-10-07 15:20:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-07 15:20:55,487 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:55,487 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:20:55,487 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:55,487 INFO L82 PathProgramCache]: Analyzing trace with hash -297836122, now seen corresponding path program 1 times [2019-10-07 15:20:55,488 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:55,488 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:55,488 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:55,488 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 15:20:55,567 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:55,567 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:55,568 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:20:55,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:20:55,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:20:55,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:20:55,569 INFO L87 Difference]: Start difference. First operand 270 states and 309 transitions. Second operand 7 states. [2019-10-07 15:20:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:56,060 INFO L93 Difference]: Finished difference Result 539 states and 635 transitions. [2019-10-07 15:20:56,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 15:20:56,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2019-10-07 15:20:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:56,064 INFO L225 Difference]: With dead ends: 539 [2019-10-07 15:20:56,064 INFO L226 Difference]: Without dead ends: 294 [2019-10-07 15:20:56,066 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-07 15:20:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-10-07 15:20:56,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 267. [2019-10-07 15:20:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-10-07 15:20:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2019-10-07 15:20:56,098 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 72 [2019-10-07 15:20:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:56,099 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2019-10-07 15:20:56,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:20:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2019-10-07 15:20:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-07 15:20:56,101 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:56,101 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:20:56,101 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:56,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1964737885, now seen corresponding path program 1 times [2019-10-07 15:20:56,102 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:56,102 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:56,102 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:56,102 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 15:20:56,246 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:56,246 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:20:56,246 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 15:20:56,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 15:20:56,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 15:20:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:20:56,248 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand 9 states. [2019-10-07 15:20:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:20:57,114 INFO L93 Difference]: Finished difference Result 812 states and 937 transitions. [2019-10-07 15:20:57,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:20:57,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2019-10-07 15:20:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:20:57,128 INFO L225 Difference]: With dead ends: 812 [2019-10-07 15:20:57,128 INFO L226 Difference]: Without dead ends: 622 [2019-10-07 15:20:57,130 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-07 15:20:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-07 15:20:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 530. [2019-10-07 15:20:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2019-10-07 15:20:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 602 transitions. [2019-10-07 15:20:57,186 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 602 transitions. Word has length 75 [2019-10-07 15:20:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:20:57,187 INFO L462 AbstractCegarLoop]: Abstraction has 530 states and 602 transitions. [2019-10-07 15:20:57,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 15:20:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 602 transitions. [2019-10-07 15:20:57,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 15:20:57,189 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:20:57,190 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:57,190 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:20:57,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:20:57,190 INFO L82 PathProgramCache]: Analyzing trace with hash -552360973, now seen corresponding path program 1 times [2019-10-07 15:20:57,191 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:20:57,191 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:57,191 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:57,191 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:20:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:20:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 15:20:57,327 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:20:57,328 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:20:57,328 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 15:20:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:20:57,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 15:20:57,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:20:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:20:57,701 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:20:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 15:20:58,052 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:20:58,081 INFO L162 IcfgInterpreter]: Started Sifa with 84 locations of interest [2019-10-07 15:20:58,082 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:20:58,089 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:20:58,098 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:20:58,099 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:21:07,754 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-07 15:21:09,289 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:21:09,470 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-07 15:21:09,605 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-07 15:21:09,719 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-07 15:21:09,945 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:10,222 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:10,422 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:10,605 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:10,950 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-07 15:21:11,074 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:11,229 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:11,361 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:11,480 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:11,591 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:11,600 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-07 15:21:11,871 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-07 15:21:11,997 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:12,113 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:12,255 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:12,422 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:12,526 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:12,662 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:12,794 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:12,915 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:13,037 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:13,239 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 546 [2019-10-07 15:21:13,348 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:13,544 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:13,655 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:13,873 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:14,203 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:14,521 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:14,733 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:14,885 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:15,278 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:15,596 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:15,707 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:15,927 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:16,151 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:16,269 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:16,484 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:21:16,622 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:16,764 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:16,874 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:16,999 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:17,267 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:17,377 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:17,516 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:17,626 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:17,738 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:17,856 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:17,996 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:18,108 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:18,234 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:18,477 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-07 15:21:18,590 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:18,848 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:19,134 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:19,403 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:19,573 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:19,686 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:19,797 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:19,924 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:20,036 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:20,148 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:20,271 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:20,399 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:20,511 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:20,634 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:20,864 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-07 15:21:20,984 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:21,111 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:21,224 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:21,336 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:21,458 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:21,670 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:21,780 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:21,981 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:22,179 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:22,296 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:22,425 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:22,535 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:22,646 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:22,764 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:22,990 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-07 15:21:23,113 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:23,238 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:23,355 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:23,468 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:23,600 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:23,796 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-07 15:21:23,907 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:24,029 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:24,267 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-07 15:21:24,380 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:24,505 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:24,696 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-07 15:21:24,808 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:24,939 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:25,146 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:25,270 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:25,392 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:25,592 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:25,702 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:25,828 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:25,938 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:26,048 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:26,167 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:26,380 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:26,491 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:26,617 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:26,820 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:26,931 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:27,051 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:27,161 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:27,271 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:27,392 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:27,637 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-07 15:21:27,750 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:27,875 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:28,079 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-07 15:21:28,192 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:28,316 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:28,516 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-07 15:21:28,631 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:28,766 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:29,064 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-07 15:21:29,176 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:29,300 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:29,490 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-07 15:21:29,603 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:29,728 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:29,941 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-07 15:21:30,053 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:30,178 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:30,372 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-07 15:21:30,485 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:30,609 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:30,817 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:30,927 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:31,050 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:31,307 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:31,417 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:31,538 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:31,648 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:31,758 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:31,876 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:32,090 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-07 15:21:32,204 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:32,334 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:32,539 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-07 15:21:32,651 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:32,776 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:32,973 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-07 15:21:33,086 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:33,207 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:33,573 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 564 [2019-10-07 15:21:33,686 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:33,818 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:34,020 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 566 [2019-10-07 15:21:34,134 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:34,267 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-07 15:21:34,475 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:34,586 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:34,709 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:34,915 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:35,024 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:35,146 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:35,353 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:35,463 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:35,587 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:36,041 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:36,284 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:36,426 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:36,536 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:36,647 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:36,765 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:36,977 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-07 15:21:37,087 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:21:37,251 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:37,453 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-07 15:21:37,565 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:37,700 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:37,908 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:38,018 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:38,139 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:38,343 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:21:38,453 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:38,574 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:38,685 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:38,796 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:38,917 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:39,132 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-07 15:21:39,249 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:39,373 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:39,576 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-07 15:21:39,688 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:39,813 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:39,926 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:40,040 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:40,168 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:40,361 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 564 [2019-10-07 15:21:40,474 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:40,599 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:40,603 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 546 for LOIs [2019-10-07 15:21:40,919 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:41,038 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-07 15:21:41,258 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:41,438 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 548 [2019-10-07 15:21:41,666 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:41,868 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-07 15:21:41,987 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:41,994 INFO L199 IcfgInterpreter]: Interpreting procedure setup with input of size 544 for LOIs [2019-10-07 15:21:42,616 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:42,617 INFO L199 IcfgInterpreter]: Interpreting procedure select_features with input of size 544 for LOIs [2019-10-07 15:21:42,718 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:42,826 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:43,139 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:21:43,250 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 548 for LOIs [2019-10-07 15:21:43,569 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:21:43,680 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-07 15:21:43,782 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-07 15:21:43,907 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:44,014 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-07 15:21:44,117 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-07 15:21:44,239 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-07 15:21:44,345 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:21:44,448 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:21:44,777 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:21:45,113 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:21:45,445 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:21:45,834 WARN L191 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 576 DAG size of output: 576 [2019-10-07 15:21:46,235 WARN L191 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:21:46,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:21:46,514 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.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 15:21:46,520 INFO L168 Benchmark]: Toolchain (without parser) took 56316.46 ms. Allocated memory was 138.4 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 102.2 MB in the beginning and 649.6 MB in the end (delta: -547.4 MB). Peak memory consumption was 470.3 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:46,521 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 15:21:46,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.76 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 169.0 MB in the end (delta: -67.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:46,522 INFO L168 Benchmark]: Boogie Preprocessor took 96.14 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 164.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:46,522 INFO L168 Benchmark]: RCFGBuilder took 1634.35 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 164.3 MB in the beginning and 146.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:46,523 INFO L168 Benchmark]: TraceAbstraction took 53880.71 ms. Allocated memory was 234.9 MB in the beginning and 1.2 GB in the end (delta: 921.2 MB). Free memory was 146.1 MB in the beginning and 649.6 MB in the end (delta: -503.5 MB). Peak memory consumption was 417.7 MB. Max. memory is 7.1 GB. [2019-10-07 15:21:46,525 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 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.76 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 169.0 MB in the end (delta: -67.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.14 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 164.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1634.35 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 164.3 MB in the beginning and 146.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53880.71 ms. Allocated memory was 234.9 MB in the beginning and 1.2 GB in the end (delta: 921.2 MB). Free memory was 146.1 MB in the beginning and 649.6 MB in the end (delta: -503.5 MB). Peak memory consumption was 417.7 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...