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_spec3_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:38,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:38,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:38,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:38,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:38,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:38,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:38,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:38,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:38,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:38,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:38,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:38,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:38,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:38,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:38,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:38,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:38,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:38,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:38,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:38,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:38,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:38,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:38,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:38,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:38,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:38,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:38,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:38,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:38,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:38,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:38,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:38,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:38,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:38,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:38,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:38,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:38,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:38,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:38,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:38,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:38,665 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 [2019-10-13 19:37:38,696 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:38,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:38,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:38,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:38,700 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:38,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:38,701 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:38,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:38,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:38,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:38,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:38,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:38,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:38,702 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:38,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:38,702 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:38,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:38,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:38,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:38,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:38,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:38,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:38,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:38,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:38,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:38,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:38,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:38,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:38,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:39,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:39,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:39,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:39,058 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:39,058 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:39,059 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product38.cil.c [2019-10-13 19:37:39,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7afbd8f69/580c48b0d32e4a0aa8d17627b6e89b39/FLAG541efc2e1 [2019-10-13 19:37:39,706 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:39,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product38.cil.c [2019-10-13 19:37:39,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7afbd8f69/580c48b0d32e4a0aa8d17627b6e89b39/FLAG541efc2e1 [2019-10-13 19:37:40,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7afbd8f69/580c48b0d32e4a0aa8d17627b6e89b39 [2019-10-13 19:37:40,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:40,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:40,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:40,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:40,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:40,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6559ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40, skipping insertion in model container [2019-10-13 19:37:40,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,046 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:40,100 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:40,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:40,598 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:40,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:40,765 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:40,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40 WrapperNode [2019-10-13 19:37:40,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:40,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:40,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:40,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:40,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (1/1) ... [2019-10-13 19:37:40,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:40,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:40,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:40,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:40,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (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 [2019-10-13 19:37:40,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:40,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:40,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:40,947 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:40,947 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:37:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:40,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:40,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:40,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:40,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:42,048 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:42,048 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:42,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:42 BoogieIcfgContainer [2019-10-13 19:37:42,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:42,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:42,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:42,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:42,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:40" (1/3) ... [2019-10-13 19:37:42,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6d9951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:42, skipping insertion in model container [2019-10-13 19:37:42,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:40" (2/3) ... [2019-10-13 19:37:42,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6d9951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:42, skipping insertion in model container [2019-10-13 19:37:42,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:42" (3/3) ... [2019-10-13 19:37:42,059 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product38.cil.c [2019-10-13 19:37:42,069 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:42,078 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:42,088 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:42,115 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:42,115 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:42,115 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:42,115 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:42,116 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:42,116 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:42,116 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:42,116 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2019-10-13 19:37:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:42,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:42,151 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] [2019-10-13 19:37:42,153 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:42,158 INFO L82 PathProgramCache]: Analyzing trace with hash 639525092, now seen corresponding path program 1 times [2019-10-13 19:37:42,167 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:42,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028105879] [2019-10-13 19:37:42,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:42,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:42,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,825 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:42,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028105879] [2019-10-13 19:37:42,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:42,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:37:42,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675439528] [2019-10-13 19:37:42,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:37:42,934 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:42,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:37:42,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:42,952 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2019-10-13 19:37:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:44,136 INFO L93 Difference]: Finished difference Result 308 states and 402 transitions. [2019-10-13 19:37:44,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:37:44,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:37:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:44,169 INFO L225 Difference]: With dead ends: 308 [2019-10-13 19:37:44,169 INFO L226 Difference]: Without dead ends: 166 [2019-10-13 19:37:44,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-10-13 19:37:44,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 133. [2019-10-13 19:37:44,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-10-13 19:37:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2019-10-13 19:37:44,274 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 52 [2019-10-13 19:37:44,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:44,275 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2019-10-13 19:37:44,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:37:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2019-10-13 19:37:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:37:44,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:44,287 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] [2019-10-13 19:37:44,287 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash -510809670, now seen corresponding path program 1 times [2019-10-13 19:37:44,288 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:44,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711265088] [2019-10-13 19:37:44,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:44,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:44,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,682 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:44,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711265088] [2019-10-13 19:37:44,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:44,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:44,750 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032676827] [2019-10-13 19:37:44,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:44,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:44,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:44,753 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 4 states. [2019-10-13 19:37:45,198 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:46,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:46,097 INFO L93 Difference]: Finished difference Result 237 states and 289 transitions. [2019-10-13 19:37:46,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:37:46,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:37:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:46,107 INFO L225 Difference]: With dead ends: 237 [2019-10-13 19:37:46,107 INFO L226 Difference]: Without dead ends: 150 [2019-10-13 19:37:46,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:37:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-10-13 19:37:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 124. [2019-10-13 19:37:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-13 19:37:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2019-10-13 19:37:46,145 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 53 [2019-10-13 19:37:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:46,146 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2019-10-13 19:37:46,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2019-10-13 19:37:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:37:46,154 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:46,154 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] [2019-10-13 19:37:46,155 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:46,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:46,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1651946043, now seen corresponding path program 1 times [2019-10-13 19:37:46,156 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:46,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308332566] [2019-10-13 19:37:46,156 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:46,157 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:46,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,571 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:46,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308332566] [2019-10-13 19:37:46,714 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:46,714 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:46,714 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566210308] [2019-10-13 19:37:46,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:46,715 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:46,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:46,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:46,716 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 8 states. [2019-10-13 19:37:47,148 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:47,501 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:47,819 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:48,098 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:49,516 INFO L93 Difference]: Finished difference Result 250 states and 307 transitions. [2019-10-13 19:37:49,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:37:49,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-13 19:37:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:49,520 INFO L225 Difference]: With dead ends: 250 [2019-10-13 19:37:49,520 INFO L226 Difference]: Without dead ends: 150 [2019-10-13 19:37:49,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-10-13 19:37:49,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 124. [2019-10-13 19:37:49,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-13 19:37:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2019-10-13 19:37:49,557 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 58 [2019-10-13 19:37:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:49,558 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2019-10-13 19:37:49,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2019-10-13 19:37:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-13 19:37:49,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:49,560 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] [2019-10-13 19:37:49,560 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:49,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:49,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1339614682, now seen corresponding path program 1 times [2019-10-13 19:37:49,561 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:49,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047497447] [2019-10-13 19:37:49,561 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:49,561 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:49,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,871 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:49,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047497447] [2019-10-13 19:37:49,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:49,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:37:49,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293709458] [2019-10-13 19:37:49,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:37:49,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:49,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:37:49,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:37:49,951 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 6 states. [2019-10-13 19:37:50,381 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:51,747 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:52,484 INFO L93 Difference]: Finished difference Result 359 states and 443 transitions. [2019-10-13 19:37:52,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:37:52,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-13 19:37:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:52,488 INFO L225 Difference]: With dead ends: 359 [2019-10-13 19:37:52,488 INFO L226 Difference]: Without dead ends: 259 [2019-10-13 19:37:52,490 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:37:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-10-13 19:37:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 216. [2019-10-13 19:37:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-10-13 19:37:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2019-10-13 19:37:52,536 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 71 [2019-10-13 19:37:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:52,536 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2019-10-13 19:37:52,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:37:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2019-10-13 19:37:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-13 19:37:52,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:52,538 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, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:52,539 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:52,539 INFO L82 PathProgramCache]: Analyzing trace with hash 345762925, now seen corresponding path program 1 times [2019-10-13 19:37:52,539 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:52,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705113452] [2019-10-13 19:37:52,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,867 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:52,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705113452] [2019-10-13 19:37:52,961 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:52,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:52,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430771714] [2019-10-13 19:37:52,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:52,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:52,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:52,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:52,963 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 8 states. [2019-10-13 19:37:53,503 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:54,976 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:55,301 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:55,581 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:55,848 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:56,801 INFO L93 Difference]: Finished difference Result 578 states and 720 transitions. [2019-10-13 19:37:56,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:37:56,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2019-10-13 19:37:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:56,807 INFO L225 Difference]: With dead ends: 578 [2019-10-13 19:37:56,807 INFO L226 Difference]: Without dead ends: 386 [2019-10-13 19:37:56,808 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:37:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2019-10-13 19:37:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 343. [2019-10-13 19:37:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-13 19:37:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 398 transitions. [2019-10-13 19:37:56,879 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 398 transitions. Word has length 85 [2019-10-13 19:37:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:56,880 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 398 transitions. [2019-10-13 19:37:56,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 398 transitions. [2019-10-13 19:37:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:37:56,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:56,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:56,882 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:56,883 INFO L82 PathProgramCache]: Analyzing trace with hash 535971955, now seen corresponding path program 1 times [2019-10-13 19:37:56,883 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:56,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929632723] [2019-10-13 19:37:56,883 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:56,884 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:56,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,177 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:57,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929632723] [2019-10-13 19:37:57,270 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:57,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:57,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164285302] [2019-10-13 19:37:57,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:57,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:57,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:57,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:57,272 INFO L87 Difference]: Start difference. First operand 343 states and 398 transitions. Second operand 10 states. [2019-10-13 19:37:57,719 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:59,272 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:59,582 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:59,853 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:00,106 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:00,491 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:01,417 INFO L93 Difference]: Finished difference Result 784 states and 993 transitions. [2019-10-13 19:38:01,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:38:01,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-13 19:38:01,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:01,424 INFO L225 Difference]: With dead ends: 784 [2019-10-13 19:38:01,424 INFO L226 Difference]: Without dead ends: 581 [2019-10-13 19:38:01,425 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:38:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2019-10-13 19:38:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 509. [2019-10-13 19:38:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-10-13 19:38:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 600 transitions. [2019-10-13 19:38:01,524 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 600 transitions. Word has length 89 [2019-10-13 19:38:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:01,525 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 600 transitions. [2019-10-13 19:38:01,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:38:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 600 transitions. [2019-10-13 19:38:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:01,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:01,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:01,528 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:01,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:01,528 INFO L82 PathProgramCache]: Analyzing trace with hash -386711628, now seen corresponding path program 1 times [2019-10-13 19:38:01,529 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:01,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219956812] [2019-10-13 19:38:01,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:01,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:01,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,833 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:01,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219956812] [2019-10-13 19:38:01,943 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:01,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:01,944 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413392338] [2019-10-13 19:38:01,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:01,945 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:01,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:01,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:01,946 INFO L87 Difference]: Start difference. First operand 509 states and 600 transitions. Second operand 8 states. [2019-10-13 19:38:02,900 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:03,141 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:03,399 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:04,283 INFO L93 Difference]: Finished difference Result 942 states and 1157 transitions. [2019-10-13 19:38:04,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:04,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-13 19:38:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:04,291 INFO L225 Difference]: With dead ends: 942 [2019-10-13 19:38:04,291 INFO L226 Difference]: Without dead ends: 569 [2019-10-13 19:38:04,293 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-10-13 19:38:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 509. [2019-10-13 19:38:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-10-13 19:38:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 599 transitions. [2019-10-13 19:38:04,402 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 599 transitions. Word has length 89 [2019-10-13 19:38:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:04,403 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 599 transitions. [2019-10-13 19:38:04,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 599 transitions. [2019-10-13 19:38:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:04,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:04,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:04,406 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:04,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:04,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1230717130, now seen corresponding path program 1 times [2019-10-13 19:38:04,406 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:04,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533741467] [2019-10-13 19:38:04,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:04,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:04,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,684 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:04,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533741467] [2019-10-13 19:38:04,832 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:04,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:04,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691329438] [2019-10-13 19:38:04,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:04,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:04,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:04,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:04,833 INFO L87 Difference]: Start difference. First operand 509 states and 599 transitions. Second operand 12 states. [2019-10-13 19:38:05,466 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:05,738 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:05,997 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:06,794 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:07,055 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:07,337 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:07,603 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:08,832 INFO L93 Difference]: Finished difference Result 1049 states and 1291 transitions. [2019-10-13 19:38:08,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:08,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-13 19:38:08,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:08,838 INFO L225 Difference]: With dead ends: 1049 [2019-10-13 19:38:08,839 INFO L226 Difference]: Without dead ends: 564 [2019-10-13 19:38:08,841 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:38:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-13 19:38:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 509. [2019-10-13 19:38:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-10-13 19:38:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 597 transitions. [2019-10-13 19:38:08,941 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 597 transitions. Word has length 89 [2019-10-13 19:38:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:08,941 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 597 transitions. [2019-10-13 19:38:08,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 597 transitions. [2019-10-13 19:38:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 19:38:08,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:08,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:08,945 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:08,946 INFO L82 PathProgramCache]: Analyzing trace with hash -420721396, now seen corresponding path program 1 times [2019-10-13 19:38:08,946 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:08,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825435524] [2019-10-13 19:38:08,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:08,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:08,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,282 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:09,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825435524] [2019-10-13 19:38:09,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:09,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:38:09,410 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292044447] [2019-10-13 19:38:09,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:38:09,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:38:09,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:38:09,411 INFO L87 Difference]: Start difference. First operand 509 states and 597 transitions. Second operand 13 states. [2019-10-13 19:38:10,114 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:10,387 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:10,643 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:11,797 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:12,564 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:12,939 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:13,248 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:14,048 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:14,365 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:14,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:14,784 INFO L93 Difference]: Finished difference Result 1036 states and 1240 transitions. [2019-10-13 19:38:14,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:38:14,784 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2019-10-13 19:38:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:14,789 INFO L225 Difference]: With dead ends: 1036 [2019-10-13 19:38:14,789 INFO L226 Difference]: Without dead ends: 551 [2019-10-13 19:38:14,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-10-13 19:38:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2019-10-13 19:38:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 509. [2019-10-13 19:38:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2019-10-13 19:38:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 585 transitions. [2019-10-13 19:38:14,887 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 585 transitions. Word has length 90 [2019-10-13 19:38:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:14,887 INFO L462 AbstractCegarLoop]: Abstraction has 509 states and 585 transitions. [2019-10-13 19:38:14,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:38:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 585 transitions. [2019-10-13 19:38:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 19:38:14,891 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:14,891 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 19:38:14,892 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:14,892 INFO L82 PathProgramCache]: Analyzing trace with hash 52445379, now seen corresponding path program 1 times [2019-10-13 19:38:14,893 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:14,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127991789] [2019-10-13 19:38:14,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,200 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:38:15,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127991789] [2019-10-13 19:38:15,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693078928] [2019-10-13 19:38:15,389 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 [2019-10-13 19:38:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-13 19:38:15,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:38:15,881 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:38:15,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-10-13 19:38:15,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831697185] [2019-10-13 19:38:15,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 19:38:15,884 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:15,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 19:38:15,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:38:15,885 INFO L87 Difference]: Start difference. First operand 509 states and 585 transitions. Second operand 19 states. [2019-10-13 19:38:16,526 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:17,312 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:17,700 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:18,267 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 189