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_spec2_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:35:33,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:35:33,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:35:33,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:35:33,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:35:33,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:35:33,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:35:33,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:35:33,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:35:33,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:35:33,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:35:33,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:35:33,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:35:33,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:35:33,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:35:33,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:35:33,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:35:33,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:35:33,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:35:33,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:35:33,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:35:33,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:35:33,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:35:33,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:35:33,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:35:33,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:35:33,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:35:33,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:35:33,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:35:33,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:35:33,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:35:33,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:35:33,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:35:33,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:35:33,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:35:33,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:35:33,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:35:33,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:35:33,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:35:33,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:35:33,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:35:33,902 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 23:35:33,925 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:35:33,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:35:33,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:35:33,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:35:33,928 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:35:33,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:35:33,929 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:35:33,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:35:33,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:35:33,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:35:33,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:35:33,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:35:33,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:35:33,931 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:35:33,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:35:33,931 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:35:33,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:35:33,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:35:33,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:35:33,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:35:33,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:35:33,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:35:33,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:35:33,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:35:33,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:35:33,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:35:33,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:35:33,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:35:33,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:35:34,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:35:34,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:35:34,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:35:34,280 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:35:34,281 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:35:34,281 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2019-10-14 23:35:34,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b91f0b4f/ef403f1dc050467bbcd55b89eb9d6580/FLAGa699a63af [2019-10-14 23:35:34,941 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:35:34,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2019-10-14 23:35:34,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b91f0b4f/ef403f1dc050467bbcd55b89eb9d6580/FLAGa699a63af [2019-10-14 23:35:35,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b91f0b4f/ef403f1dc050467bbcd55b89eb9d6580 [2019-10-14 23:35:35,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:35:35,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:35:35,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:35,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:35:35,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:35:35,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:35,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671e4bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35, skipping insertion in model container [2019-10-14 23:35:35,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:35,259 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:35:35,311 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:35:35,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:35,795 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:35:35,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:35,946 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:35:35,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35 WrapperNode [2019-10-14 23:35:35,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:35,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:35:35,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:35:35,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:35:35,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:35,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:35,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:35,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:36,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:36,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:36,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (1/1) ... [2019-10-14 23:35:36,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:35:36,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:35:36,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:35:36,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:35:36,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (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 23:35:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:35:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:35:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:35:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:35:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:35:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:35:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:35:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:35:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:35:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:35:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:35:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:35:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:35:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:35:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:35:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:35:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:35:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:35:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:35:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:35:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:35:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:35:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:35:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:35:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:35:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:35:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:35:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:35:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:35:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:35:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:35:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:35:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:35:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:35:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:35:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:35:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:35:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:35:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:35:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:35:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:35:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:35:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:35:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:35:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:35:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:35:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:35:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:35:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:35:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:35:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:35:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:35:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:35:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:35:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:35:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:35:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:35:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:35:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:35:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:35:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:35:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:35:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:35:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:35:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:35:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:35:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:35:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:35:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:35:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:35:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:35:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:35:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:35:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:35:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:35:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:35:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:35:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:35:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:35:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:35:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:35:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:35:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:35:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:35:37,306 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:35:37,307 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:35:37,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:37 BoogieIcfgContainer [2019-10-14 23:35:37,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:35:37,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:35:37,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:35:37,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:35:37,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:35" (1/3) ... [2019-10-14 23:35:37,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724ce32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:37, skipping insertion in model container [2019-10-14 23:35:37,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:35" (2/3) ... [2019-10-14 23:35:37,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724ce32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:37, skipping insertion in model container [2019-10-14 23:35:37,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:37" (3/3) ... [2019-10-14 23:35:37,316 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2019-10-14 23:35:37,326 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:35:37,334 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:35:37,345 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:35:37,377 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:35:37,377 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:35:37,377 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:35:37,377 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:35:37,378 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:35:37,378 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:35:37,379 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:35:37,379 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:35:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-10-14 23:35:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:35:37,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:37,413 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 23:35:37,415 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:37,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:37,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1859141612, now seen corresponding path program 1 times [2019-10-14 23:35:37,429 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:37,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082697321] [2019-10-14 23:35:37,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:37,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:37,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,236 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,355 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 23:35:38,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082697321] [2019-10-14 23:35:38,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:38,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:35:38,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028251254] [2019-10-14 23:35:38,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:35:38,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:38,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:35:38,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:38,394 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 4 states. [2019-10-14 23:35:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:39,784 INFO L93 Difference]: Finished difference Result 317 states and 416 transitions. [2019-10-14 23:35:39,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:35:39,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:35:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:39,804 INFO L225 Difference]: With dead ends: 317 [2019-10-14 23:35:39,804 INFO L226 Difference]: Without dead ends: 177 [2019-10-14 23:35:39,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-10-14 23:35:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 141. [2019-10-14 23:35:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-14 23:35:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2019-10-14 23:35:39,919 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 51 [2019-10-14 23:35:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:39,920 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2019-10-14 23:35:39,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:35:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2019-10-14 23:35:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:35:39,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:39,932 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 23:35:39,933 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:39,934 INFO L82 PathProgramCache]: Analyzing trace with hash 2121847036, now seen corresponding path program 1 times [2019-10-14 23:35:39,934 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:39,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748743992] [2019-10-14 23:35:39,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:39,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:39,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,372 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:40,419 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 23:35:40,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748743992] [2019-10-14 23:35:40,419 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:40,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:35:40,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308165982] [2019-10-14 23:35:40,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:35:40,422 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:40,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:35:40,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:35:40,423 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 5 states. [2019-10-14 23:35:40,967 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:42,017 INFO L93 Difference]: Finished difference Result 256 states and 319 transitions. [2019-10-14 23:35:42,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:35:42,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:35:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:42,021 INFO L225 Difference]: With dead ends: 256 [2019-10-14 23:35:42,021 INFO L226 Difference]: Without dead ends: 167 [2019-10-14 23:35:42,023 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:35:42,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2019-10-14 23:35:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2019-10-14 23:35:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-10-14 23:35:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2019-10-14 23:35:42,065 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 52 [2019-10-14 23:35:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:42,065 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2019-10-14 23:35:42,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:35:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2019-10-14 23:35:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:35:42,067 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:42,068 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] [2019-10-14 23:35:42,068 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:42,068 INFO L82 PathProgramCache]: Analyzing trace with hash 51071948, now seen corresponding path program 1 times [2019-10-14 23:35:42,068 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:42,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954871117] [2019-10-14 23:35:42,069 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:42,069 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:42,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,451 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:42,549 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 23:35:42,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954871117] [2019-10-14 23:35:42,550 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:42,550 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:42,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333064375] [2019-10-14 23:35:42,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:42,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:42,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:42,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:42,552 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand 9 states. [2019-10-14 23:35:43,023 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:43,393 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:35:43,716 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:43,987 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:44,935 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:47,194 INFO L93 Difference]: Finished difference Result 448 states and 568 transitions. [2019-10-14 23:35:47,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:35:47,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-14 23:35:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:47,200 INFO L225 Difference]: With dead ends: 448 [2019-10-14 23:35:47,200 INFO L226 Difference]: Without dead ends: 344 [2019-10-14 23:35:47,204 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:35:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2019-10-14 23:35:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 279. [2019-10-14 23:35:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-10-14 23:35:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 342 transitions. [2019-10-14 23:35:47,286 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 342 transitions. Word has length 56 [2019-10-14 23:35:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:47,286 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 342 transitions. [2019-10-14 23:35:47,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 342 transitions. [2019-10-14 23:35:47,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:35:47,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:47,288 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] [2019-10-14 23:35:47,289 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:47,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1476511447, now seen corresponding path program 1 times [2019-10-14 23:35:47,289 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:47,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395282827] [2019-10-14 23:35:47,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:47,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:47,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,640 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,785 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 23:35:47,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395282827] [2019-10-14 23:35:47,785 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:47,786 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:47,786 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14701600] [2019-10-14 23:35:47,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:47,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:47,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:47,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:47,789 INFO L87 Difference]: Start difference. First operand 279 states and 342 transitions. Second operand 9 states. [2019-10-14 23:35:48,375 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:49,484 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:49,953 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:50,288 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:50,629 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:52,173 INFO L93 Difference]: Finished difference Result 895 states and 1185 transitions. [2019-10-14 23:35:52,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:35:52,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-14 23:35:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:52,180 INFO L225 Difference]: With dead ends: 895 [2019-10-14 23:35:52,181 INFO L226 Difference]: Without dead ends: 644 [2019-10-14 23:35:52,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:35:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-14 23:35:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 506. [2019-10-14 23:35:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2019-10-14 23:35:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 624 transitions. [2019-10-14 23:35:52,306 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 624 transitions. Word has length 62 [2019-10-14 23:35:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:52,307 INFO L462 AbstractCegarLoop]: Abstraction has 506 states and 624 transitions. [2019-10-14 23:35:52,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 624 transitions. [2019-10-14 23:35:52,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 23:35:52,309 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:52,309 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] [2019-10-14 23:35:52,310 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:52,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1658122107, now seen corresponding path program 1 times [2019-10-14 23:35:52,310 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:52,311 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575151241] [2019-10-14 23:35:52,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:52,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:52,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,611 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,811 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 23:35:52,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575151241] [2019-10-14 23:35:52,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:52,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:52,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467530402] [2019-10-14 23:35:52,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:52,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:52,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:52,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:52,815 INFO L87 Difference]: Start difference. First operand 506 states and 624 transitions. Second operand 10 states. [2019-10-14 23:35:53,629 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:54,675 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:54,981 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:55,276 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:56,059 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:57,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:57,404 INFO L93 Difference]: Finished difference Result 1423 states and 1942 transitions. [2019-10-14 23:35:57,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 23:35:57,405 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-14 23:35:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:57,413 INFO L225 Difference]: With dead ends: 1423 [2019-10-14 23:35:57,414 INFO L226 Difference]: Without dead ends: 945 [2019-10-14 23:35:57,416 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:35:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-10-14 23:35:57,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 749. [2019-10-14 23:35:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-14 23:35:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 911 transitions. [2019-10-14 23:35:57,574 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 911 transitions. Word has length 66 [2019-10-14 23:35:57,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:57,575 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 911 transitions. [2019-10-14 23:35:57,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:35:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 911 transitions. [2019-10-14 23:35:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:35:57,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:57,578 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:35:57,579 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:57,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:57,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1979078966, now seen corresponding path program 1 times [2019-10-14 23:35:57,579 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:57,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581770199] [2019-10-14 23:35:57,580 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:57,580 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:57,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,857 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:35:58,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581770199] [2019-10-14 23:35:58,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:58,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:58,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314702318] [2019-10-14 23:35:58,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:58,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:58,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:58,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:58,097 INFO L87 Difference]: Start difference. First operand 749 states and 911 transitions. Second operand 10 states. [2019-10-14 23:35:58,641 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:59,667 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:59,936 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:00,249 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:00,536 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:36:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:02,840 INFO L93 Difference]: Finished difference Result 2518 states and 3561 transitions. [2019-10-14 23:36:02,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:36:02,842 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-10-14 23:36:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:02,857 INFO L225 Difference]: With dead ends: 2518 [2019-10-14 23:36:02,857 INFO L226 Difference]: Without dead ends: 1797 [2019-10-14 23:36:02,861 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2019-10-14 23:36:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2019-10-14 23:36:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1359. [2019-10-14 23:36:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2019-10-14 23:36:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1650 transitions. [2019-10-14 23:36:03,317 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1650 transitions. Word has length 103 [2019-10-14 23:36:03,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:03,318 INFO L462 AbstractCegarLoop]: Abstraction has 1359 states and 1650 transitions. [2019-10-14 23:36:03,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1650 transitions. [2019-10-14 23:36:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:36:03,323 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:03,323 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:36:03,323 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:03,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1738538837, now seen corresponding path program 1 times [2019-10-14 23:36:03,324 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:03,324 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914233904] [2019-10-14 23:36:03,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:03,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:03,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,607 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:03,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914233904] [2019-10-14 23:36:03,783 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:03,783 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:03,783 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860499240] [2019-10-14 23:36:03,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:03,784 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:03,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:03,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:03,785 INFO L87 Difference]: Start difference. First operand 1359 states and 1650 transitions. Second operand 10 states. [2019-10-14 23:36:05,025 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:05,361 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:05,710 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:06,045 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:07,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:07,322 INFO L93 Difference]: Finished difference Result 3144 states and 4258 transitions. [2019-10-14 23:36:07,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:07,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-10-14 23:36:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:07,336 INFO L225 Difference]: With dead ends: 3144 [2019-10-14 23:36:07,336 INFO L226 Difference]: Without dead ends: 1813 [2019-10-14 23:36:07,341 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2019-10-14 23:36:07,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1399. [2019-10-14 23:36:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2019-10-14 23:36:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1690 transitions. [2019-10-14 23:36:07,736 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1690 transitions. Word has length 103 [2019-10-14 23:36:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:07,736 INFO L462 AbstractCegarLoop]: Abstraction has 1399 states and 1690 transitions. [2019-10-14 23:36:07,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1690 transitions. [2019-10-14 23:36:07,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:36:07,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:07,740 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:36:07,741 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:07,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:07,741 INFO L82 PathProgramCache]: Analyzing trace with hash 189733865, now seen corresponding path program 1 times [2019-10-14 23:36:07,742 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:07,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871516953] [2019-10-14 23:36:07,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:07,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:07,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,023 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:08,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871516953] [2019-10-14 23:36:08,173 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:08,173 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:08,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302530429] [2019-10-14 23:36:08,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:08,175 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:08,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:08,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:08,175 INFO L87 Difference]: Start difference. First operand 1399 states and 1690 transitions. Second operand 12 states. [2019-10-14 23:36:08,923 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:09,185 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:09,445 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:10,289 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:10,651 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:10,916 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190