java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:19:21,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:19:21,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:19:21,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:19:21,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:19:21,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:19:21,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:19:21,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:19:21,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:19:21,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:19:21,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:19:21,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:19:21,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:19:21,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:19:21,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:19:21,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:19:21,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:19:21,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:19:21,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:19:21,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:19:21,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:19:21,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:19:21,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:19:21,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:19:21,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:19:21,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:19:21,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:19:21,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:19:21,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:19:21,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:19:21,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:19:21,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:19:21,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:19:21,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:19:21,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:19:21,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:19:21,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:19:21,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:19:21,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:19:21,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:19:21,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:19:21,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 15:19:21,957 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:19:21,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:19:21,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:19:21,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:19:21,959 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:19:21,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:19:21,960 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:19:21,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:19:21,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:19:21,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:19:21,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:19:21,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:19:21,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:19:21,962 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:19:21,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:19:21,962 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:19:21,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:19:21,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:19:21,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:19:21,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:19:21,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:19:21,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:19:21,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:19:21,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:19:21,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:19:21,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:19:21,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:19:21,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:19:21,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 15:19:22,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:19:22,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:19:22,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:19:22,287 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:19:22,288 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:19:22,288 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-10-07 15:19:22,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8830fd6/c32eaf0e946b4d6a9e978c348165f979/FLAGe3d27b944 [2019-10-07 15:19:22,890 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:19:22,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-10-07 15:19:22,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8830fd6/c32eaf0e946b4d6a9e978c348165f979/FLAGe3d27b944 [2019-10-07 15:19:23,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8830fd6/c32eaf0e946b4d6a9e978c348165f979 [2019-10-07 15:19:23,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:19:23,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:19:23,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:23,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:19:23,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:19:23,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429df39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23, skipping insertion in model container [2019-10-07 15:19:23,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,212 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:19:23,268 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:19:23,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:23,724 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:19:23,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:23,863 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:19:23,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23 WrapperNode [2019-10-07 15:19:23,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:23,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:19:23,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:19:23,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:19:23,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (1/1) ... [2019-10-07 15:19:23,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:19:23,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:19:23,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:19:23,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:19:23,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:19:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:19:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:19:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:19:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:19:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-07 15:19:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:19:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-07 15:19:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:19:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:19:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:19:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:19:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:19:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:19:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-07 15:19:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:19:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:19:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:19:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:19:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:19:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:19:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:19:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-07 15:19:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:19:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:19:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:19:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:19:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:19:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:19:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:19:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:19:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:19:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:19:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:19:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:19:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:19:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:19:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:19:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:19:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:19:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:19:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:19:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:19:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:19:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:19:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:19:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:19:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:19:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-07 15:19:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:19:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:19:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:19:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:19:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:19:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-07 15:19:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:19:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-07 15:19:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-07 15:19:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:19:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:19:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:19:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:19:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:19:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:19:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:19:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:19:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:19:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:19:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:19:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:19:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:19:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:19:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:19:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:19:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:19:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:19:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:19:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:19:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:19:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:19:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:19:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:19:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:19:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:19:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:19:25,442 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:19:25,442 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:19:25,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:25 BoogieIcfgContainer [2019-10-07 15:19:25,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:19:25,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:19:25,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:19:25,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:19:25,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:19:23" (1/3) ... [2019-10-07 15:19:25,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363a29af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:25, skipping insertion in model container [2019-10-07 15:19:25,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:23" (2/3) ... [2019-10-07 15:19:25,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363a29af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:25, skipping insertion in model container [2019-10-07 15:19:25,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:25" (3/3) ... [2019-10-07 15:19:25,452 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product57.cil.c [2019-10-07 15:19:25,462 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:19:25,471 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:19:25,483 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:19:25,516 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:19:25,516 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:19:25,517 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:19:25,517 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:19:25,517 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:19:25,517 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:19:25,518 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:19:25,518 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:19:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2019-10-07 15:19:25,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-07 15:19:25,556 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:25,557 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:25,559 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:25,565 INFO L82 PathProgramCache]: Analyzing trace with hash 602218542, now seen corresponding path program 1 times [2019-10-07 15:19:25,573 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:25,574 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,574 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,574 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:25,904 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,906 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:25,906 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:19:25,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:19:25,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:19:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:19:25,922 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 2 states. [2019-10-07 15:19:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:25,964 INFO L93 Difference]: Finished difference Result 237 states and 280 transitions. [2019-10-07 15:19:25,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:19:25,965 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-07 15:19:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:25,978 INFO L225 Difference]: With dead ends: 237 [2019-10-07 15:19:25,978 INFO L226 Difference]: Without dead ends: 119 [2019-10-07 15:19:25,983 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:19:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-10-07 15:19:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-10-07 15:19:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-07 15:19:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2019-10-07 15:19:26,040 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 42 [2019-10-07 15:19:26,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:26,041 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2019-10-07 15:19:26,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:19:26,042 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2019-10-07 15:19:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-07 15:19:26,045 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:26,045 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:26,046 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:26,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:26,046 INFO L82 PathProgramCache]: Analyzing trace with hash -865784585, now seen corresponding path program 1 times [2019-10-07 15:19:26,047 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:26,047 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,047 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,047 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:26,168 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,168 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:26,169 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:19:26,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:26,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:26,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:19:26,171 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 3 states. [2019-10-07 15:19:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:26,194 INFO L93 Difference]: Finished difference Result 195 states and 219 transitions. [2019-10-07 15:19:26,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:26,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-07 15:19:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:26,197 INFO L225 Difference]: With dead ends: 195 [2019-10-07 15:19:26,197 INFO L226 Difference]: Without dead ends: 111 [2019-10-07 15:19:26,199 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:19:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-10-07 15:19:26,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-10-07 15:19:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-10-07 15:19:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2019-10-07 15:19:26,215 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 43 [2019-10-07 15:19:26,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:26,215 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2019-10-07 15:19:26,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:26,216 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2019-10-07 15:19:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-07 15:19:26,218 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:26,218 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:26,218 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:26,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1972021982, now seen corresponding path program 1 times [2019-10-07 15:19:26,219 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:26,219 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,219 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,219 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:26,387 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,387 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:26,387 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:19:26,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:26,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:26,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:19:26,389 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 7 states. [2019-10-07 15:19:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:26,704 INFO L93 Difference]: Finished difference Result 200 states and 225 transitions. [2019-10-07 15:19:26,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 15:19:26,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2019-10-07 15:19:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:26,707 INFO L225 Difference]: With dead ends: 200 [2019-10-07 15:19:26,707 INFO L226 Difference]: Without dead ends: 111 [2019-10-07 15:19:26,708 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:19:26,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-10-07 15:19:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-10-07 15:19:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-10-07 15:19:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2019-10-07 15:19:26,722 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 45 [2019-10-07 15:19:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:26,722 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2019-10-07 15:19:26,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2019-10-07 15:19:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-07 15:19:26,725 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:26,725 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:26,725 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:26,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:26,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1730274497, now seen corresponding path program 1 times [2019-10-07 15:19:26,726 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:26,726 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,726 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,726 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:26,858 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,859 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:26,859 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 15:19:26,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 15:19:26,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 15:19:26,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 15:19:26,861 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand 5 states. [2019-10-07 15:19:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:27,280 INFO L93 Difference]: Finished difference Result 284 states and 327 transitions. [2019-10-07 15:19:27,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 15:19:27,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-10-07 15:19:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:27,283 INFO L225 Difference]: With dead ends: 284 [2019-10-07 15:19:27,283 INFO L226 Difference]: Without dead ends: 195 [2019-10-07 15:19:27,285 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-10-07 15:19:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 180. [2019-10-07 15:19:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-10-07 15:19:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2019-10-07 15:19:27,309 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 58 [2019-10-07 15:19:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:27,309 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2019-10-07 15:19:27,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 15:19:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2019-10-07 15:19:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-07 15:19:27,312 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:27,312 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:27,313 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:27,313 INFO L82 PathProgramCache]: Analyzing trace with hash 19997047, now seen corresponding path program 1 times [2019-10-07 15:19:27,313 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:27,314 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,314 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:27,314 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:27,488 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,488 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:27,489 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 15:19:27,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 15:19:27,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 15:19:27,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:19:27,490 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand 10 states. [2019-10-07 15:19:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:27,974 INFO L93 Difference]: Finished difference Result 536 states and 611 transitions. [2019-10-07 15:19:27,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:19:27,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2019-10-07 15:19:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:27,980 INFO L225 Difference]: With dead ends: 536 [2019-10-07 15:19:27,980 INFO L226 Difference]: Without dead ends: 378 [2019-10-07 15:19:27,983 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:19:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-10-07 15:19:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 364. [2019-10-07 15:19:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-10-07 15:19:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 402 transitions. [2019-10-07 15:19:28,021 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 402 transitions. Word has length 67 [2019-10-07 15:19:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:28,022 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 402 transitions. [2019-10-07 15:19:28,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 15:19:28,022 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 402 transitions. [2019-10-07 15:19:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 15:19:28,026 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:28,026 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:28,026 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:28,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:28,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1292948161, now seen corresponding path program 1 times [2019-10-07 15:19:28,027 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:28,027 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:28,027 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:28,027 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 15:19:28,188 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:28,188 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:28,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 15:19:28,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:28,466 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 15:19:28,719 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:19:28,720 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-10-07 15:19:28,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:28,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:28,724 INFO L87 Difference]: Start difference. First operand 364 states and 402 transitions. Second operand 3 states. [2019-10-07 15:19:28,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:28,808 INFO L93 Difference]: Finished difference Result 709 states and 784 transitions. [2019-10-07 15:19:28,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:28,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-07 15:19:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:28,815 INFO L225 Difference]: With dead ends: 709 [2019-10-07 15:19:28,816 INFO L226 Difference]: Without dead ends: 367 [2019-10-07 15:19:28,817 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 256 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 15:19:28,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2019-10-07 15:19:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 339. [2019-10-07 15:19:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2019-10-07 15:19:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 360 transitions. [2019-10-07 15:19:28,866 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 360 transitions. Word has length 128 [2019-10-07 15:19:28,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:28,868 INFO L462 AbstractCegarLoop]: Abstraction has 339 states and 360 transitions. [2019-10-07 15:19:28,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 360 transitions. [2019-10-07 15:19:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-07 15:19:28,876 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:28,877 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:29,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:29,083 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:29,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1080968167, now seen corresponding path program 1 times [2019-10-07 15:19:29,084 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:29,084 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:29,084 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:29,084 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 15:19:29,285 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:29,285 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:29,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 15:19:29,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 15:19:29,546 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 15:19:29,806 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 15:19:29,806 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-07 15:19:29,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:29,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:29,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:19:29,808 INFO L87 Difference]: Start difference. First operand 339 states and 360 transitions. Second operand 7 states. [2019-10-07 15:19:30,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:30,062 INFO L93 Difference]: Finished difference Result 348 states and 369 transitions. [2019-10-07 15:19:30,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 15:19:30,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-07 15:19:30,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:30,069 INFO L225 Difference]: With dead ends: 348 [2019-10-07 15:19:30,069 INFO L226 Difference]: Without dead ends: 345 [2019-10-07 15:19:30,070 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-07 15:19:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2019-10-07 15:19:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 339. [2019-10-07 15:19:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2019-10-07 15:19:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 359 transitions. [2019-10-07 15:19:30,098 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 359 transitions. Word has length 115 [2019-10-07 15:19:30,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:30,099 INFO L462 AbstractCegarLoop]: Abstraction has 339 states and 359 transitions. [2019-10-07 15:19:30,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 359 transitions. [2019-10-07 15:19:30,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 15:19:30,104 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:30,105 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:30,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:30,313 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:30,313 INFO L82 PathProgramCache]: Analyzing trace with hash 278854686, now seen corresponding path program 1 times [2019-10-07 15:19:30,314 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:30,314 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:30,314 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:30,314 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 15:19:30,589 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:30,589 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:30,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-07 15:19:30,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:30,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:31,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:31,123 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:31,570 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:31,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:31,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:32,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:32,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:32,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:32,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 15:19:32,724 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:19:32,725 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-10-07 15:19:32,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 15:19:32,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 15:19:32,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2019-10-07 15:19:32,726 INFO L87 Difference]: Start difference. First operand 339 states and 359 transitions. Second operand 12 states. [2019-10-07 15:19:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:34,559 INFO L93 Difference]: Finished difference Result 800 states and 898 transitions. [2019-10-07 15:19:34,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-07 15:19:34,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 125 [2019-10-07 15:19:34,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:34,564 INFO L225 Difference]: With dead ends: 800 [2019-10-07 15:19:34,564 INFO L226 Difference]: Without dead ends: 483 [2019-10-07 15:19:34,566 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 227 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=397, Invalid=2053, Unknown=0, NotChecked=0, Total=2450 [2019-10-07 15:19:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2019-10-07 15:19:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 462. [2019-10-07 15:19:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2019-10-07 15:19:34,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 506 transitions. [2019-10-07 15:19:34,595 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 506 transitions. Word has length 125 [2019-10-07 15:19:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:34,595 INFO L462 AbstractCegarLoop]: Abstraction has 462 states and 506 transitions. [2019-10-07 15:19:34,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 15:19:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 506 transitions. [2019-10-07 15:19:34,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-07 15:19:34,598 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:34,598 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 15:19:34,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:34,803 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:34,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:34,804 INFO L82 PathProgramCache]: Analyzing trace with hash 404617193, now seen corresponding path program 1 times [2019-10-07 15:19:34,804 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:34,805 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:34,805 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:34,805 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 15:19:34,946 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:34,946 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:35,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-07 15:19:35,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 15:19:35,275 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 15:19:35,849 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:19:35,849 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 9] total 19 [2019-10-07 15:19:35,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 15:19:35,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 15:19:35,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:19:35,851 INFO L87 Difference]: Start difference. First operand 462 states and 506 transitions. Second operand 8 states. [2019-10-07 15:19:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:36,304 INFO L93 Difference]: Finished difference Result 1123 states and 1237 transitions. [2019-10-07 15:19:36,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 15:19:36,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2019-10-07 15:19:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:36,310 INFO L225 Difference]: With dead ends: 1123 [2019-10-07 15:19:36,310 INFO L226 Difference]: Without dead ends: 800 [2019-10-07 15:19:36,311 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:19:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2019-10-07 15:19:36,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 785. [2019-10-07 15:19:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2019-10-07 15:19:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 855 transitions. [2019-10-07 15:19:36,353 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 855 transitions. Word has length 138 [2019-10-07 15:19:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:36,353 INFO L462 AbstractCegarLoop]: Abstraction has 785 states and 855 transitions. [2019-10-07 15:19:36,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 15:19:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 855 transitions. [2019-10-07 15:19:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 15:19:36,357 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:36,357 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:36,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:36,567 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:36,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2113106723, now seen corresponding path program 2 times [2019-10-07 15:19:36,567 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:36,568 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:36,568 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:36,568 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-07 15:19:36,777 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:36,777 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:36,777 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 15:19:36,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:19:36,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:19:36,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 15:19:36,778 INFO L87 Difference]: Start difference. First operand 785 states and 855 transitions. Second operand 14 states. [2019-10-07 15:19:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:37,125 INFO L93 Difference]: Finished difference Result 1265 states and 1405 transitions. [2019-10-07 15:19:37,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 15:19:37,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 128 [2019-10-07 15:19:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:37,130 INFO L225 Difference]: With dead ends: 1265 [2019-10-07 15:19:37,131 INFO L226 Difference]: Without dead ends: 833 [2019-10-07 15:19:37,132 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-10-07 15:19:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2019-10-07 15:19:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 770. [2019-10-07 15:19:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2019-10-07 15:19:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 835 transitions. [2019-10-07 15:19:37,179 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 835 transitions. Word has length 128 [2019-10-07 15:19:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:37,179 INFO L462 AbstractCegarLoop]: Abstraction has 770 states and 835 transitions. [2019-10-07 15:19:37,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:19:37,179 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 835 transitions. [2019-10-07 15:19:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 15:19:37,182 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:37,183 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:37,183 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash 136520726, now seen corresponding path program 1 times [2019-10-07 15:19:37,184 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:37,184 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:37,184 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:37,184 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:19:37,419 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:37,419 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:37,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-07 15:19:37,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:37,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:37,890 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:38,195 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 15:19:38,626 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:19:38,673 INFO L162 IcfgInterpreter]: Started Sifa with 104 locations of interest [2019-10-07 15:19:38,673 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:19:38,681 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:19:38,690 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:19:38,691 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:19:47,225 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-07 15:19:48,582 WARN L191 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:19:48,705 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:48,844 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:49,010 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:49,222 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:49,446 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:49,653 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:49,886 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:50,251 WARN L191 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-07 15:19:50,411 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:50,563 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:50,690 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:50,838 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:50,956 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:50,963 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-07 15:19:51,254 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-07 15:19:51,256 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-10-07 15:19:51,369 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:51,486 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:51,641 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:51,759 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:51,974 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:52,095 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:52,349 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:52,598 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 542 [2019-10-07 15:19:52,710 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:52,849 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:53,069 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:53,181 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:53,484 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:53,689 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:53,825 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:54,128 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:54,431 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:54,544 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:54,752 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:54,967 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,082 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:55,292 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,431 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:55,631 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:19:55,742 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:55,881 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:55,986 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:56,099 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:56,359 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:19:56,472 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:56,590 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:56,694 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:56,798 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:56,910 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:19:57,039 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:19:57,149 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:19:57,300 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,412 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,518 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,636 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,819 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:19:57,924 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:19:58,038 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,148 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-07 15:19:58,273 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-07 15:19:58,443 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-07 15:19:58,552 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:58,662 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:58,787 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:58,910 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:59,028 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:59,145 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:59,282 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:59,416 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:59,590 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:59,699 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:59,808 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:19:59,925 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:00,164 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:00,270 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:00,400 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:00,612 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:00,716 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:00,837 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:00,941 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:01,045 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:01,158 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:01,366 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:01,473 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,620 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,824 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:01,930 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,061 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,249 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:02,366 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,480 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,679 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 563 DAG size of output: 554 [2019-10-07 15:20:02,788 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:02,905 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,093 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 556 [2019-10-07 15:20:03,201 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:03,321 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:03,649 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:03,754 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:03,869 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:04,251 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:04,356 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:04,471 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:04,575 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:04,679 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:04,790 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:04,996 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:05,102 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:05,219 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:05,414 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:05,523 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:05,638 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:05,743 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:05,847 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:05,962 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:06,416 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:06,653 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:06,801 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:06,986 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:07,102 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:07,220 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,398 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-07 15:20:07,503 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-07 15:20:07,618 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:07,799 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 563 DAG size of output: 556 [2019-10-07 15:20:07,905 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:08,021 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:08,202 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 558 [2019-10-07 15:20:08,312 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:08,429 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:08,549 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:08,658 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:08,777 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:08,889 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:08,998 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:09,117 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:09,312 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:09,416 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:09,541 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:09,728 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:09,832 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:09,951 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:10,055 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:10,158 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:10,269 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:10,472 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:10,578 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:10,699 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:10,895 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:11,002 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,123 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,330 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:11,436 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,550 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,733 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 563 DAG size of output: 556 [2019-10-07 15:20:11,839 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,957 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:12,164 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:12,271 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:12,385 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:12,583 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:12,687 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:12,802 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:12,906 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:13,009 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:13,121 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:13,239 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,345 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,464 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,658 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:13,765 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,884 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:14,079 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:14,183 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:14,297 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:14,486 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:14,590 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:14,712 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:14,907 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:15,011 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,125 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,314 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-07 15:20:15,423 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,539 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,643 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,750 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,861 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:15,978 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,086 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,209 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,321 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,427 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,543 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,650 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,757 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:16,871 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,050 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 563 DAG size of output: 556 [2019-10-07 15:20:17,157 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,273 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:17,461 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 558 [2019-10-07 15:20:17,567 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:17,683 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:17,686 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 544 for LOIs [2019-10-07 15:20:17,860 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:18,077 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:20:18,267 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:18,272 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 542 for LOIs [2019-10-07 15:20:18,413 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-07 15:20:18,619 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-07 15:20:18,940 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:19,250 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:19,361 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 551 [2019-10-07 15:20:19,577 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-07 15:20:19,902 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:20:20,019 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:20,281 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:20,623 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 569 [2019-10-07 15:20:20,815 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 557 [2019-10-07 15:20:21,123 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:21,473 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:21,583 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:21,845 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:22,184 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:22,308 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:22,571 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:22,892 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:22,993 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:23,268 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:23,590 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:23,693 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:23,956 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:24,276 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:24,380 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:24,645 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:24,970 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:25,073 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:25,338 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:25,658 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:25,762 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:26,038 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:26,361 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:26,464 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:26,744 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:27,064 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:27,167 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:27,434 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:27,756 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:27,858 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:28,122 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-10-07 15:20:28,443 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 568 [2019-10-07 15:20:28,802 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:29,224 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:29,626 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:30,018 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:30,413 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:30,810 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:31,209 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:31,603 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:32,002 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:32,393 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:32,783 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-10-07 15:20:33,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:20:33,076 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: assume true; 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: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 15:20:33,083 INFO L168 Benchmark]: Toolchain (without parser) took 69894.87 ms. Allocated memory was 138.4 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 101.8 MB in the beginning and 357.5 MB in the end (delta: -255.7 MB). Peak memory consumption was 939.1 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:33,083 INFO L168 Benchmark]: CDTParser took 0.21 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: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 15:20:33,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.78 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 167.4 MB in the end (delta: -65.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:33,087 INFO L168 Benchmark]: Boogie Preprocessor took 78.57 ms. Allocated memory is still 201.9 MB. Free memory was 167.4 MB in the beginning and 163.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:33,087 INFO L168 Benchmark]: RCFGBuilder took 1501.35 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 163.5 MB in the beginning and 142.2 MB in the end (delta: 21.3 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:33,087 INFO L168 Benchmark]: TraceAbstraction took 67635.44 ms. Allocated memory was 235.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 142.2 MB in the beginning and 357.5 MB in the end (delta: -215.3 MB). Peak memory consumption was 882.5 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:33,090 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.78 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 167.4 MB in the end (delta: -65.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.57 ms. Allocated memory is still 201.9 MB. Free memory was 167.4 MB in the beginning and 163.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1501.35 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 163.5 MB in the beginning and 142.2 MB in the end (delta: 21.3 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 67635.44 ms. Allocated memory was 235.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 142.2 MB in the beginning and 357.5 MB in the end (delta: -215.3 MB). Peak memory consumption was 882.5 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: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: 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...