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_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:38:54,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:38:54,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:38:54,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:38:54,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:38:54,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:38:54,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:38:54,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:38:54,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:38:54,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:38:54,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:38:54,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:38:54,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:38:54,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:38:54,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:38:54,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:38:54,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:38:54,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:38:54,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:38:54,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:38:54,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:38:54,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:38:54,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:38:54,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:38:54,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:38:54,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:38:54,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:38:54,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:38:54,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:38:54,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:38:54,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:38:54,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:38:54,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:38:54,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:38:54,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:38:54,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:38:54,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:38:54,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:38:54,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:38:54,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:38:54,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:38:54,937 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 [2019-10-14 23:38:54,951 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:38:54,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:38:54,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:38:54,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:38:54,953 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:38:54,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:38:54,953 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:38:54,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:38:54,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:38:54,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:38:54,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:38:54,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:38:54,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:38:54,955 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:38:54,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:38:54,955 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:38:54,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:38:54,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:38:54,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:38:54,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:38:54,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:38:54,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:38:54,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:38:54,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:38:54,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:38:54,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:38:54,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:38:54,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:38:54,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:38:55,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:38:55,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:38:55,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:38:55,246 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:38:55,246 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:38:55,247 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2019-10-14 23:38:55,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409279590/d5ec51a97b9a45b694ad39f15e63d438/FLAGfff7c3095 [2019-10-14 23:38:55,865 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:38:55,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2019-10-14 23:38:55,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409279590/d5ec51a97b9a45b694ad39f15e63d438/FLAGfff7c3095 [2019-10-14 23:38:56,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409279590/d5ec51a97b9a45b694ad39f15e63d438 [2019-10-14 23:38:56,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:38:56,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:38:56,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:56,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:38:56,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:38:56,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e9da3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56, skipping insertion in model container [2019-10-14 23:38:56,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,099 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:38:56,151 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:38:56,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:56,610 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:38:56,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:56,770 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:38:56,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56 WrapperNode [2019-10-14 23:38:56,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:56,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:38:56,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:38:56,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:38:56,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (1/1) ... [2019-10-14 23:38:56,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:38:56,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:38:56,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:38:56,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:38:56,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (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 23:38:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:38:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:38:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:38:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:38:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:38:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:38:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:38:56,943 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:38:56,943 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:38:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:38:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:38:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:38:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:38:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:38:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:38:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:38:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:38:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:38:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:38:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:38:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:38:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:38:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:38:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:38:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:38:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:38:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:38:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:38:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:38:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:38:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:38:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:38:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:38:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:38:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:38:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:38:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:38:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:38:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:38:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:38:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:38:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:38:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:38:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:38:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:38:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:38:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:38:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:38:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:38:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:38:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:38:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:38:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:38:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:38:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:38:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:38:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:38:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:38:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:38:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:38:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:38:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:38:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:38:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:38:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:38:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:38:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:38:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:38:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:38:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:38:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:38:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:38:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:38:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:38:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:38:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:38:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:38:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:38:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:38:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:38:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:38:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:38:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:38:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:38:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:38:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:38:58,019 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:38:58,020 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:38:58,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:58 BoogieIcfgContainer [2019-10-14 23:38:58,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:38:58,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:38:58,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:38:58,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:38:58,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:38:56" (1/3) ... [2019-10-14 23:38:58,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e70cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:58, skipping insertion in model container [2019-10-14 23:38:58,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:56" (2/3) ... [2019-10-14 23:38:58,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e70cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:58, skipping insertion in model container [2019-10-14 23:38:58,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:58" (3/3) ... [2019-10-14 23:38:58,031 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2019-10-14 23:38:58,042 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:38:58,051 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:38:58,062 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:38:58,090 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:38:58,090 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:38:58,090 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:38:58,090 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:38:58,091 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:38:58,091 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:38:58,091 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:38:58,091 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:38:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2019-10-14 23:38:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:38:58,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:58,126 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 23:38:58,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:58,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:58,134 INFO L82 PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times [2019-10-14 23:38:58,143 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:58,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448665926] [2019-10-14 23:38:58,144 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:58,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:58,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,858 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,963 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 23:38:58,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448665926] [2019-10-14 23:38:58,965 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:58,965 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:38:58,965 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360025050] [2019-10-14 23:38:58,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:38:58,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:58,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:38:58,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:38:58,989 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2019-10-14 23:39:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:00,217 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2019-10-14 23:39:00,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:39:00,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:39:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:00,235 INFO L225 Difference]: With dead ends: 338 [2019-10-14 23:39:00,235 INFO L226 Difference]: Without dead ends: 182 [2019-10-14 23:39:00,240 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 23:39:00,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-10-14 23:39:00,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2019-10-14 23:39:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-10-14 23:39:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2019-10-14 23:39:00,332 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46 [2019-10-14 23:39:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:00,332 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2019-10-14 23:39:00,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:39:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2019-10-14 23:39:00,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:39:00,336 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:00,336 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 23:39:00,337 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:00,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:00,337 INFO L82 PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times [2019-10-14 23:39:00,338 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:00,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662903136] [2019-10-14 23:39:00,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:00,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:00,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:00,691 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:00,757 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 23:39:00,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662903136] [2019-10-14 23:39:00,758 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:00,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:39:00,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268412880] [2019-10-14 23:39:00,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:39:00,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:00,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:39:00,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:39:00,776 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states. [2019-10-14 23:39:01,228 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:02,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:02,180 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2019-10-14 23:39:02,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:02,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:39:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:02,184 INFO L225 Difference]: With dead ends: 267 [2019-10-14 23:39:02,185 INFO L226 Difference]: Without dead ends: 166 [2019-10-14 23:39:02,187 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 23:39:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-10-14 23:39:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2019-10-14 23:39:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-14 23:39:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2019-10-14 23:39:02,222 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47 [2019-10-14 23:39:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:02,223 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2019-10-14 23:39:02,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:39:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2019-10-14 23:39:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:39:02,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:02,225 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] [2019-10-14 23:39:02,226 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:02,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:02,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times [2019-10-14 23:39:02,226 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:02,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554565709] [2019-10-14 23:39:02,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:02,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:02,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:02,604 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:02,688 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 23:39:02,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554565709] [2019-10-14 23:39:02,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:02,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:39:02,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396017543] [2019-10-14 23:39:02,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:02,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:02,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:39:02,691 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2019-10-14 23:39:03,148 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:03,477 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:03,793 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:04,048 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:05,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:05,545 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2019-10-14 23:39:05,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:39:05,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 23:39:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:05,549 INFO L225 Difference]: With dead ends: 280 [2019-10-14 23:39:05,549 INFO L226 Difference]: Without dead ends: 166 [2019-10-14 23:39:05,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-10-14 23:39:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2019-10-14 23:39:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-14 23:39:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2019-10-14 23:39:05,588 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52 [2019-10-14 23:39:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:05,589 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2019-10-14 23:39:05,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2019-10-14 23:39:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-14 23:39:05,591 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:05,592 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, 1, 1, 1, 1] [2019-10-14 23:39:05,592 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times [2019-10-14 23:39:05,593 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:05,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600503517] [2019-10-14 23:39:05,593 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:05,593 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:05,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,898 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,001 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 23:39:06,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600503517] [2019-10-14 23:39:06,001 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:06,002 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:39:06,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683036920] [2019-10-14 23:39:06,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:06,003 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:06,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:06,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:39:06,003 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states. [2019-10-14 23:39:06,440 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:07,786 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:08,436 INFO L93 Difference]: Finished difference Result 377 states and 459 transitions. [2019-10-14 23:39:08,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:39:08,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2019-10-14 23:39:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:08,440 INFO L225 Difference]: With dead ends: 377 [2019-10-14 23:39:08,441 INFO L226 Difference]: Without dead ends: 263 [2019-10-14 23:39:08,442 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2019-10-14 23:39:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220. [2019-10-14 23:39:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-10-14 23:39:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2019-10-14 23:39:08,490 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65 [2019-10-14 23:39:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:08,491 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2019-10-14 23:39:08,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2019-10-14 23:39:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-14 23:39:08,493 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:08,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:08,494 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:08,494 INFO L82 PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times [2019-10-14 23:39:08,494 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:08,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362279447] [2019-10-14 23:39:08,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:08,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:08,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,804 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,937 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 23:39:08,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362279447] [2019-10-14 23:39:08,938 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:08,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:39:08,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228434283] [2019-10-14 23:39:08,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:39:08,941 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:08,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:39:08,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:39:08,941 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states. [2019-10-14 23:39:09,557 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:09,831 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:10,081 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:10,734 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:11,004 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:11,263 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:12,387 INFO L93 Difference]: Finished difference Result 460 states and 553 transitions. [2019-10-14 23:39:12,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:39:12,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2019-10-14 23:39:12,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:12,390 INFO L225 Difference]: With dead ends: 460 [2019-10-14 23:39:12,390 INFO L226 Difference]: Without dead ends: 264 [2019-10-14 23:39:12,391 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:39:12,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-10-14 23:39:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2019-10-14 23:39:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-10-14 23:39:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2019-10-14 23:39:12,465 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79 [2019-10-14 23:39:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:12,465 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2019-10-14 23:39:12,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:39:12,465 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2019-10-14 23:39:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-14 23:39:12,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:12,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:12,468 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:12,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times [2019-10-14 23:39:12,468 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:12,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311602655] [2019-10-14 23:39:12,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:12,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:12,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,864 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:13,027 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 23:39:13,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311602655] [2019-10-14 23:39:13,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:13,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:39:13,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951697164] [2019-10-14 23:39:13,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:39:13,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:13,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:39:13,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:13,032 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states. [2019-10-14 23:39:13,686 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:14,021 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:14,293 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:14,565 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:15,146 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:16,147 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:16,512 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:16,798 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:17,147 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:17,496 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:17,786 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:19,482 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:19,912 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:20,712 INFO L93 Difference]: Finished difference Result 789 states and 997 transitions. [2019-10-14 23:39:20,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:20,713 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2019-10-14 23:39:20,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:20,718 INFO L225 Difference]: With dead ends: 789 [2019-10-14 23:39:20,718 INFO L226 Difference]: Without dead ends: 589 [2019-10-14 23:39:20,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-14 23:39:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527. [2019-10-14 23:39:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-14 23:39:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions. [2019-10-14 23:39:20,818 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79 [2019-10-14 23:39:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:20,818 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 609 transitions. [2019-10-14 23:39:20,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions. [2019-10-14 23:39:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-14 23:39:20,822 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:20,823 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, 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] [2019-10-14 23:39:20,823 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash -640912824, now seen corresponding path program 1 times [2019-10-14 23:39:20,824 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:20,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003305215] [2019-10-14 23:39:20,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:20,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:20,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,163 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-14 23:39:21,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003305215] [2019-10-14 23:39:21,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440678730] [2019-10-14 23:39:21,332 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 23:39:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:21,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:39:21,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:21,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:21,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-14 23:39:21,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480733045] [2019-10-14 23:39:21,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:21,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:21,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:21,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:39:21,757 INFO L87 Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 8 states. [2019-10-14 23:39:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:23,288 INFO L93 Difference]: Finished difference Result 1328 states and 1690 transitions. [2019-10-14 23:39:23,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:39:23,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2019-10-14 23:39:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:23,296 INFO L225 Difference]: With dead ends: 1328 [2019-10-14 23:39:23,297 INFO L226 Difference]: Without dead ends: 950 [2019-10-14 23:39:23,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:39:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2019-10-14 23:39:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 869. [2019-10-14 23:39:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2019-10-14 23:39:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1047 transitions. [2019-10-14 23:39:23,480 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1047 transitions. Word has length 138 [2019-10-14 23:39:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:23,481 INFO L462 AbstractCegarLoop]: Abstraction has 869 states and 1047 transitions. [2019-10-14 23:39:23,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1047 transitions. [2019-10-14 23:39:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-14 23:39:23,488 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:23,488 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:23,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:23,694 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:23,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2098643833, now seen corresponding path program 1 times [2019-10-14 23:39:23,695 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:23,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655827147] [2019-10-14 23:39:23,695 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:23,696 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:23,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,018 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:39:24,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655827147] [2019-10-14 23:39:24,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661702045] [2019-10-14 23:39:24,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:24,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:39:24,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:24,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-14 23:39:24,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554996237] [2019-10-14 23:39:24,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:24,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:24,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:24,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:39:24,531 INFO L87 Difference]: Start difference. First operand 869 states and 1047 transitions. Second operand 6 states. [2019-10-14 23:39:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:24,706 INFO L93 Difference]: Finished difference Result 1552 states and 1935 transitions. [2019-10-14 23:39:24,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:39:24,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2019-10-14 23:39:24,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:24,711 INFO L225 Difference]: With dead ends: 1552 [2019-10-14 23:39:24,711 INFO L226 Difference]: Without dead ends: 707 [2019-10-14 23:39:24,715 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2019-10-14 23:39:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2019-10-14 23:39:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2019-10-14 23:39:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 844 transitions. [2019-10-14 23:39:24,925 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 844 transitions. Word has length 145 [2019-10-14 23:39:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:24,925 INFO L462 AbstractCegarLoop]: Abstraction has 705 states and 844 transitions. [2019-10-14 23:39:24,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:24,926 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 844 transitions. [2019-10-14 23:39:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:39:24,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:24,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:25,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:25,136 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:25,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times [2019-10-14 23:39:25,138 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:25,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466233039] [2019-10-14 23:39:25,138 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:25,138 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:25,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,476 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:39:25,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466233039] [2019-10-14 23:39:25,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792147434] [2019-10-14 23:39:25,629 INFO L94 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 [2019-10-14 23:39:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:25,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:26,016 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:26,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-10-14 23:39:26,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225431409] [2019-10-14 23:39:26,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-14 23:39:26,018 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-14 23:39:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:39:26,019 INFO L87 Difference]: Start difference. First operand 705 states and 844 transitions. Second operand 17 states. [2019-10-14 23:39:26,867 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:27,651 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:28,847 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:29,177 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:29,455 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:30,041 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2019-10-14 23:39:30,426 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:30,744 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:31,542 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:31,817 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:32,100 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:32,372 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:33,309 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:33,589 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:33,906 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:34,168 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187