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 -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:39:21,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:39:21,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:39:21,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:39:21,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:39:21,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:39:21,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:39:21,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:39:21,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:39:21,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:39:21,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:39:21,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:39:21,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:39:21,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:39:21,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:39:21,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:39:21,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:39:21,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:39:21,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:39:21,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:39:21,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:39:21,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:39:21,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:39:21,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:39:21,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:39:21,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:39:21,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:39:21,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:39:21,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:39:21,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:39:21,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:39:21,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:39:21,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:39:21,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:39:22,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:39:22,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:39:22,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:39:22,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:39:22,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:39:22,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:39:22,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:39:22,004 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 [2019-10-14 23:39:22,032 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:39:22,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:39:22,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:39:22,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:39:22,033 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:39:22,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:39:22,034 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:39:22,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:39:22,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:39:22,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:39:22,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:39:22,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:39:22,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:39:22,035 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:39:22,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:39:22,036 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:39:22,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:39:22,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:39:22,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:39:22,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:39:22,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:39:22,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:39:22,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:39:22,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:39:22,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:39:22,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:39:22,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:39:22,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:39:22,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:39:22,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:39:22,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:39:22,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:39:22,316 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:39:22,317 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:39:22,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-10-14 23:39:22,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb138ec89/d3ac37b7b0d34744883d2952903604a4/FLAGf27839982 [2019-10-14 23:39:22,874 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:39:22,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-10-14 23:39:22,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb138ec89/d3ac37b7b0d34744883d2952903604a4/FLAGf27839982 [2019-10-14 23:39:23,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb138ec89/d3ac37b7b0d34744883d2952903604a4 [2019-10-14 23:39:23,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:39:23,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:39:23,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:23,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:39:23,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:39:23,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1dec4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23, skipping insertion in model container [2019-10-14 23:39:23,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,181 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:39:23,235 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:39:23,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:23,636 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:39:23,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:23,770 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:39:23,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23 WrapperNode [2019-10-14 23:39:23,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:23,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:39:23,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:39:23,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:39:23,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (1/1) ... [2019-10-14 23:39:23,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:39:23,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:39:23,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:39:23,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:39:23,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (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 [2019-10-14 23:39:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:39:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:39:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:23,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:23,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:39:23,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:39:23,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:39:23,912 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:39:23,912 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:39:23,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:39:23,913 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:39:23,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:39:23,913 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:39:23,913 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:39:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:39:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:39:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:39:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:39:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:39:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:39:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:39:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:39:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:39:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:39:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:39:23,916 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:39:23,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:39:23,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:23,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:39:23,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:39:23,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:39:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:39:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:39:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:39:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:39:23,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:39:23,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:39:23,918 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:39:23,918 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:39:23,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:39:23,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:39:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:39:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:39:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:39:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:39:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:39:23,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:39:23,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:39:23,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:39:23,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:23,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:39:23,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:23,920 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:23,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:39:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:39:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:39:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:39:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:39:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:39:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:39:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:39:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:39:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:39:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:39:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:39:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:39:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:39:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:39:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:39:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:39:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:39:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:39:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:39:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:39:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:39:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:39:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:39:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:39:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:39:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:39:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:39:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:39:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:39:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:39:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:39:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:39:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:39:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:39:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:39:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:39:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:39:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:39:25,049 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:39:25,049 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:39:25,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:25 BoogieIcfgContainer [2019-10-14 23:39:25,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:39:25,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:39:25,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:39:25,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:39:25,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:39:23" (1/3) ... [2019-10-14 23:39:25,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1634bdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:25, skipping insertion in model container [2019-10-14 23:39:25,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:23" (2/3) ... [2019-10-14 23:39:25,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1634bdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:25, skipping insertion in model container [2019-10-14 23:39:25,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:25" (3/3) ... [2019-10-14 23:39:25,059 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2019-10-14 23:39:25,069 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:39:25,077 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:39:25,088 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:39:25,114 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:39:25,115 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:39:25,115 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:39:25,115 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:39:25,115 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:39:25,116 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:39:25,116 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:39:25,116 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:39:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2019-10-14 23:39:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:39:25,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:25,149 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:25,151 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:25,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2019-10-14 23:39:25,166 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:25,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372562727] [2019-10-14 23:39:25,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:25,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:25,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,837 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:25,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372562727] [2019-10-14 23:39:25,946 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:25,946 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:39:25,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234890864] [2019-10-14 23:39:25,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:39:25,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:25,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:39:25,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:39:25,971 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2019-10-14 23:39:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:27,269 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2019-10-14 23:39:27,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:39:27,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:39:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:27,287 INFO L225 Difference]: With dead ends: 365 [2019-10-14 23:39:27,287 INFO L226 Difference]: Without dead ends: 197 [2019-10-14 23:39:27,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:39:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-10-14 23:39:27,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2019-10-14 23:39:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-14 23:39:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2019-10-14 23:39:27,388 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2019-10-14 23:39:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:27,389 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2019-10-14 23:39:27,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:39:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2019-10-14 23:39:27,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:39:27,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:27,392 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:27,393 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2019-10-14 23:39:27,393 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:27,394 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55970982] [2019-10-14 23:39:27,394 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:27,394 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:27,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,759 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:27,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55970982] [2019-10-14 23:39:27,814 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:27,814 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:39:27,814 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517224884] [2019-10-14 23:39:27,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:39:27,827 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:27,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:39:27,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:39:27,830 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2019-10-14 23:39:28,319 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:29,324 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2019-10-14 23:39:29,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:29,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:39:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:29,328 INFO L225 Difference]: With dead ends: 292 [2019-10-14 23:39:29,328 INFO L226 Difference]: Without dead ends: 181 [2019-10-14 23:39:29,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:39:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-14 23:39:29,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2019-10-14 23:39:29,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-14 23:39:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2019-10-14 23:39:29,376 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2019-10-14 23:39:29,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:29,377 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2019-10-14 23:39:29,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:39:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2019-10-14 23:39:29,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:39:29,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:29,379 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:29,380 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:29,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:29,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2019-10-14 23:39:29,380 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:29,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243106864] [2019-10-14 23:39:29,381 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:29,381 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:29,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,772 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:29,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243106864] [2019-10-14 23:39:29,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:29,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:39:29,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882735546] [2019-10-14 23:39:29,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:29,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:29,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:29,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:39:29,878 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2019-10-14 23:39:30,281 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:30,622 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:30,902 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:31,168 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:31,907 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:34,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:34,357 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2019-10-14 23:39:34,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:39:34,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-14 23:39:34,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:34,363 INFO L225 Difference]: With dead ends: 510 [2019-10-14 23:39:34,363 INFO L226 Difference]: Without dead ends: 384 [2019-10-14 23:39:34,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:39:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2019-10-14 23:39:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2019-10-14 23:39:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-10-14 23:39:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2019-10-14 23:39:34,452 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2019-10-14 23:39:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:34,453 INFO L462 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2019-10-14 23:39:34,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2019-10-14 23:39:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:39:34,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:34,456 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:34,456 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:34,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:34,456 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2019-10-14 23:39:34,457 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:34,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65178317] [2019-10-14 23:39:34,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:34,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:34,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,812 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:34,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65178317] [2019-10-14 23:39:34,959 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:34,959 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:39:34,959 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376970513] [2019-10-14 23:39:34,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:39:34,960 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:34,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:39:34,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:34,961 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2019-10-14 23:39:35,493 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:35,836 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:36,124 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:36,393 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:36,995 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:37,931 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:38,379 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:38,741 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:39,014 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:39,375 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:39,776 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:40,206 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:40,649 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:43,086 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2019-10-14 23:39:43,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:43,087 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-14 23:39:43,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:43,096 INFO L225 Difference]: With dead ends: 1305 [2019-10-14 23:39:43,096 INFO L226 Difference]: Without dead ends: 1011 [2019-10-14 23:39:43,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2019-10-14 23:39:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2019-10-14 23:39:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2019-10-14 23:39:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2019-10-14 23:39:43,317 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2019-10-14 23:39:43,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:43,318 INFO L462 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2019-10-14 23:39:43,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:43,318 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2019-10-14 23:39:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:39:43,322 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:43,322 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:43,323 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:43,323 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2019-10-14 23:39:43,323 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:43,324 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393574081] [2019-10-14 23:39:43,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:43,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:43,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,609 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:43,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393574081] [2019-10-14 23:39:43,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:43,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:39:43,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387523835] [2019-10-14 23:39:43,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:43,697 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:43,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:43,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:39:43,698 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2019-10-14 23:39:44,110 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:46,078 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2019-10-14 23:39:46,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:39:46,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-14 23:39:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:46,087 INFO L225 Difference]: With dead ends: 2165 [2019-10-14 23:39:46,087 INFO L226 Difference]: Without dead ends: 1279 [2019-10-14 23:39:46,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2019-10-14 23:39:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2019-10-14 23:39:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2019-10-14 23:39:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2019-10-14 23:39:46,301 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2019-10-14 23:39:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:46,302 INFO L462 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2019-10-14 23:39:46,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2019-10-14 23:39:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:39:46,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:46,305 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:46,305 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:46,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:46,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2019-10-14 23:39:46,306 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:46,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957692655] [2019-10-14 23:39:46,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:46,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:46,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,611 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:39:46,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957692655] [2019-10-14 23:39:46,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215367600] [2019-10-14 23:39:46,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:39:46,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:39:47,097 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:47,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-14 23:39:47,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436516314] [2019-10-14 23:39:47,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 23:39:47,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:47,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 23:39:47,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:47,099 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 15 states. [2019-10-14 23:39:47,739 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:48,429 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:49,346 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:51,032 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:51,488 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:52,739 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:53,034 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:53,509 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:54,523 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:54,932 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:55,241 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:55,523 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:55,940 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:56,308 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:57,066 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:57,395 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:57,769 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:58,019 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:58,433 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:58,720 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:59,109 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:59,389 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:59,875 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:00,171 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:00,572 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:00,860 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:01,622 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:01,956 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:02,242 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:03,078 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191