/usr/bin/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_spec1_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:55:04,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:55:04,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:55:04,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:55:04,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:55:04,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:55:04,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:55:04,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:55:04,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:55:04,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:55:04,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:55:04,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:55:04,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:55:04,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:55:04,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:55:04,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:55:04,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:55:04,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:55:04,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:55:04,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:55:04,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:55:04,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:55:04,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:55:04,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:55:04,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:55:04,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:55:04,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:55:04,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:55:04,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:55:04,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:55:04,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:55:04,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:55:04,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:55:04,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:55:04,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:55:04,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:55:04,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:55:04,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:55:04,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:55:04,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:55:04,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:55:04,671 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 [2019-11-06 21:55:04,684 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:55:04,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:55:04,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:55:04,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:55:04,686 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:55:04,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:55:04,687 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:55:04,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:55:04,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:55:04,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:55:04,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:55:04,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:55:04,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:55:04,688 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:55:04,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:55:04,688 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:55:04,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:55:04,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:55:04,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:55:04,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:55:04,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:55:04,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:55:04,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:55:04,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:55:04,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:55:04,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:55:04,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:55:04,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:55:04,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:55:04,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:55:04,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:55:04,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:55:04,977 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:55:04,977 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:55:04,978 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2019-11-06 21:55:05,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce8d9e4a/5c263eee37224dca9e49b8884acbb38f/FLAG6193fd138 [2019-11-06 21:55:05,570 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:55:05,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2019-11-06 21:55:05,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce8d9e4a/5c263eee37224dca9e49b8884acbb38f/FLAG6193fd138 [2019-11-06 21:55:05,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce8d9e4a/5c263eee37224dca9e49b8884acbb38f [2019-11-06 21:55:05,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:55:05,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:55:05,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:55:05,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:55:05,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:55:05,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:05" (1/1) ... [2019-11-06 21:55:05,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312b99b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:05, skipping insertion in model container [2019-11-06 21:55:05,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:05" (1/1) ... [2019-11-06 21:55:05,899 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:55:05,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:55:06,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:55:06,420 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:55:06,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:55:06,571 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:55:06,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06 WrapperNode [2019-11-06 21:55:06,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:55:06,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:55:06,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:55:06,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:55:06,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (1/1) ... [2019-11-06 21:55:06,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (1/1) ... [2019-11-06 21:55:06,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (1/1) ... [2019-11-06 21:55:06,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (1/1) ... [2019-11-06 21:55:06,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (1/1) ... [2019-11-06 21:55:06,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (1/1) ... [2019-11-06 21:55:06,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (1/1) ... [2019-11-06 21:55:06,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:55:06,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:55:06,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:55:06,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:55:06,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (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 [2019-11-06 21:55:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:55:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:55:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:55:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:55:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:55:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:55:06,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:55:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:55:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:55:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:55:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:55:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:55:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:55:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:55:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:55:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:55:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:55:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:55:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:55:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:55:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:55:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:55:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:55:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:55:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:55:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:55:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 21:55:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:55:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:55:06,730 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:55:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:55:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:55:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:55:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:55:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:55:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:55:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:55:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:55:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:55:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 21:55:06,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:55:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:55:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:55:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:55:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:55:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:55:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:55:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:55:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:55:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:55:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:55:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:55:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:55:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:55:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:55:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:55:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:55:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:55:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:55:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:55:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:55:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:55:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:55:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:55:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:55:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:55:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:55:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:55:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:55:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:55:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:55:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:55:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:55:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:55:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:55:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:55:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:55:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 21:55:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:55:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:55:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:55:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:55:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:55:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:55:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:55:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 21:55:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:55:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:55:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:55:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:55:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:55:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:55:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:55:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:55:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:55:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:55:07,860 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:55:07,860 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:55:07,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:07 BoogieIcfgContainer [2019-11-06 21:55:07,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:55:07,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:55:07,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:55:07,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:55:07,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:55:05" (1/3) ... [2019-11-06 21:55:07,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4e615c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:07, skipping insertion in model container [2019-11-06 21:55:07,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:06" (2/3) ... [2019-11-06 21:55:07,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4e615c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:07, skipping insertion in model container [2019-11-06 21:55:07,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:07" (3/3) ... [2019-11-06 21:55:07,873 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2019-11-06 21:55:07,883 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:55:07,893 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:55:07,905 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:55:07,940 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:55:07,940 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:55:07,941 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:55:07,941 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:55:07,941 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:55:07,941 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:55:07,942 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:55:07,942 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:55:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-11-06 21:55:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 21:55:07,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:07,992 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:55:07,998 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:08,005 INFO L82 PathProgramCache]: Analyzing trace with hash 135364863, now seen corresponding path program 1 times [2019-11-06 21:55:08,013 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:08,013 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733224509] [2019-11-06 21:55:08,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:08,738 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:08,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733224509] [2019-11-06 21:55:08,855 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:08,856 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:55:08,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540955941] [2019-11-06 21:55:08,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:55:08,862 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:08,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:55:08,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:55:08,880 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2019-11-06 21:55:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:10,146 INFO L93 Difference]: Finished difference Result 323 states and 418 transitions. [2019-11-06 21:55:10,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:55:10,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 21:55:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:10,163 INFO L225 Difference]: With dead ends: 323 [2019-11-06 21:55:10,164 INFO L226 Difference]: Without dead ends: 174 [2019-11-06 21:55:10,168 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:55:10,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-11-06 21:55:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2019-11-06 21:55:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-06 21:55:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-11-06 21:55:10,267 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 46 [2019-11-06 21:55:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:10,267 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-11-06 21:55:10,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:55:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-11-06 21:55:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 21:55:10,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:10,271 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:55:10,271 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:10,272 INFO L82 PathProgramCache]: Analyzing trace with hash 327228860, now seen corresponding path program 1 times [2019-11-06 21:55:10,272 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:10,272 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424469022] [2019-11-06 21:55:10,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:10,628 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:10,665 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424469022] [2019-11-06 21:55:10,666 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:10,666 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:55:10,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169776567] [2019-11-06 21:55:10,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:55:10,668 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:10,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:55:10,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:55:10,669 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 4 states. [2019-11-06 21:55:11,244 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:12,205 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2019-11-06 21:55:12,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:55:12,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 21:55:12,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:12,209 INFO L225 Difference]: With dead ends: 256 [2019-11-06 21:55:12,210 INFO L226 Difference]: Without dead ends: 158 [2019-11-06 21:55:12,211 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:55:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-11-06 21:55:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2019-11-06 21:55:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-06 21:55:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2019-11-06 21:55:12,247 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 47 [2019-11-06 21:55:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:12,247 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2019-11-06 21:55:12,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:55:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2019-11-06 21:55:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:55:12,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:12,250 INFO L410 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] [2019-11-06 21:55:12,250 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:12,251 INFO L82 PathProgramCache]: Analyzing trace with hash -207054876, now seen corresponding path program 1 times [2019-11-06 21:55:12,251 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:12,251 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437203428] [2019-11-06 21:55:12,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:12,595 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:12,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437203428] [2019-11-06 21:55:12,700 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:12,700 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:55:12,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555203176] [2019-11-06 21:55:12,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:55:12,702 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:12,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:55:12,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:55:12,703 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 8 states. [2019-11-06 21:55:13,127 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:13,476 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:55:13,768 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:14,023 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:15,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:15,450 INFO L93 Difference]: Finished difference Result 265 states and 323 transitions. [2019-11-06 21:55:15,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:55:15,458 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-11-06 21:55:15,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:15,461 INFO L225 Difference]: With dead ends: 265 [2019-11-06 21:55:15,461 INFO L226 Difference]: Without dead ends: 158 [2019-11-06 21:55:15,462 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:55:15,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-11-06 21:55:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2019-11-06 21:55:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-06 21:55:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2019-11-06 21:55:15,495 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 51 [2019-11-06 21:55:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:15,496 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2019-11-06 21:55:15,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:55:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2019-11-06 21:55:15,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 21:55:15,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:15,499 INFO L410 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] [2019-11-06 21:55:15,499 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:15,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1468702982, now seen corresponding path program 1 times [2019-11-06 21:55:15,500 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:15,500 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794784364] [2019-11-06 21:55:15,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,778 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:15,932 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794784364] [2019-11-06 21:55:15,932 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:15,932 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:55:15,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570914782] [2019-11-06 21:55:15,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:55:15,934 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:15,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:55:15,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:55:15,935 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 6 states. [2019-11-06 21:55:16,401 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:17,593 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:18,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:18,321 INFO L93 Difference]: Finished difference Result 357 states and 439 transitions. [2019-11-06 21:55:18,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:55:18,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2019-11-06 21:55:18,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:18,326 INFO L225 Difference]: With dead ends: 357 [2019-11-06 21:55:18,326 INFO L226 Difference]: Without dead ends: 250 [2019-11-06 21:55:18,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:55:18,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-11-06 21:55:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2019-11-06 21:55:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2019-11-06 21:55:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2019-11-06 21:55:18,374 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 64 [2019-11-06 21:55:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:18,375 INFO L462 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2019-11-06 21:55:18,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:55:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2019-11-06 21:55:18,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 21:55:18,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:18,377 INFO L410 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] [2019-11-06 21:55:18,377 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:18,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:18,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1930431345, now seen corresponding path program 1 times [2019-11-06 21:55:18,378 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:18,378 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833081819] [2019-11-06 21:55:18,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,682 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:18,778 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833081819] [2019-11-06 21:55:18,778 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:18,778 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:55:18,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60870180] [2019-11-06 21:55:18,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:55:18,779 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:18,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:55:18,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:55:18,780 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 8 states. [2019-11-06 21:55:19,237 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:20,292 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:20,650 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:21,234 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:21,507 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:21,791 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:22,879 INFO L93 Difference]: Finished difference Result 622 states and 764 transitions. [2019-11-06 21:55:22,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 21:55:22,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2019-11-06 21:55:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:22,885 INFO L225 Difference]: With dead ends: 622 [2019-11-06 21:55:22,886 INFO L226 Difference]: Without dead ends: 437 [2019-11-06 21:55:22,887 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:55:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-11-06 21:55:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2019-11-06 21:55:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2019-11-06 21:55:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 426 transitions. [2019-11-06 21:55:22,976 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 426 transitions. Word has length 78 [2019-11-06 21:55:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:22,976 INFO L462 AbstractCegarLoop]: Abstraction has 373 states and 426 transitions. [2019-11-06 21:55:22,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:55:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 426 transitions. [2019-11-06 21:55:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-06 21:55:22,978 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:22,978 INFO L410 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] [2019-11-06 21:55:22,978 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:22,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:22,979 INFO L82 PathProgramCache]: Analyzing trace with hash -613018165, now seen corresponding path program 1 times [2019-11-06 21:55:22,979 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:22,979 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507496558] [2019-11-06 21:55:22,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,261 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:23,383 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507496558] [2019-11-06 21:55:23,383 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:23,383 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:55:23,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253335736] [2019-11-06 21:55:23,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:55:23,384 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:55:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:55:23,385 INFO L87 Difference]: Start difference. First operand 373 states and 426 transitions. Second operand 9 states. [2019-11-06 21:55:23,993 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:25,204 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:25,509 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:26,650 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:26,924 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:27,204 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:27,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:27,445 INFO L93 Difference]: Finished difference Result 476 states and 594 transitions. [2019-11-06 21:55:27,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 21:55:27,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2019-11-06 21:55:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:27,449 INFO L225 Difference]: With dead ends: 476 [2019-11-06 21:55:27,449 INFO L226 Difference]: Without dead ends: 473 [2019-11-06 21:55:27,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:55:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-11-06 21:55:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 373. [2019-11-06 21:55:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2019-11-06 21:55:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2019-11-06 21:55:27,537 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 82 [2019-11-06 21:55:27,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:27,538 INFO L462 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2019-11-06 21:55:27,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:55:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2019-11-06 21:55:27,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-06 21:55:27,539 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:27,540 INFO L410 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] [2019-11-06 21:55:27,540 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:27,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:27,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1664141551, now seen corresponding path program 1 times [2019-11-06 21:55:27,541 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:27,541 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624862948] [2019-11-06 21:55:27,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,814 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:55:27,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624862948] [2019-11-06 21:55:27,955 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:27,955 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:55:27,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716622514] [2019-11-06 21:55:27,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:55:27,956 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:55:27,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:55:27,957 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 9 states. [2019-11-06 21:55:29,306 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:29,581 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:55:29,851 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:30,129 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:31,400 INFO L93 Difference]: Finished difference Result 830 states and 1028 transitions. [2019-11-06 21:55:31,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:55:31,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-11-06 21:55:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:31,405 INFO L225 Difference]: With dead ends: 830 [2019-11-06 21:55:31,405 INFO L226 Difference]: Without dead ends: 481 [2019-11-06 21:55:31,407 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:55:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2019-11-06 21:55:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 383. [2019-11-06 21:55:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2019-11-06 21:55:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 435 transitions. [2019-11-06 21:55:31,487 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 435 transitions. Word has length 98 [2019-11-06 21:55:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:31,488 INFO L462 AbstractCegarLoop]: Abstraction has 383 states and 435 transitions. [2019-11-06 21:55:31,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:55:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 435 transitions. [2019-11-06 21:55:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-06 21:55:31,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:31,490 INFO L410 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] [2019-11-06 21:55:31,491 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:31,491 INFO L82 PathProgramCache]: Analyzing trace with hash -770655213, now seen corresponding path program 1 times [2019-11-06 21:55:31,491 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:31,491 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031913525] [2019-11-06 21:55:31,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,776 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:55:31,972 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031913525] [2019-11-06 21:55:31,972 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:31,972 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 21:55:31,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239322539] [2019-11-06 21:55:31,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 21:55:31,973 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:31,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 21:55:31,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:55:31,974 INFO L87 Difference]: Start difference. First operand 383 states and 435 transitions. Second operand 11 states. [2019-11-06 21:55:32,712 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:32,975 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:33,222 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:33,850 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:34,117 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:34,395 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:35,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:35,654 INFO L93 Difference]: Finished difference Result 850 states and 1050 transitions. [2019-11-06 21:55:35,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 21:55:35,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2019-11-06 21:55:35,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:35,658 INFO L225 Difference]: With dead ends: 850 [2019-11-06 21:55:35,659 INFO L226 Difference]: Without dead ends: 491 [2019-11-06 21:55:35,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:55:35,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2019-11-06 21:55:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2019-11-06 21:55:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2019-11-06 21:55:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 443 transitions. [2019-11-06 21:55:35,727 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 443 transitions. Word has length 98 [2019-11-06 21:55:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:35,727 INFO L462 AbstractCegarLoop]: Abstraction has 391 states and 443 transitions. [2019-11-06 21:55:35,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 21:55:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 443 transitions. [2019-11-06 21:55:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-06 21:55:35,729 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:35,730 INFO L410 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] [2019-11-06 21:55:35,730 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:35,730 INFO L82 PathProgramCache]: Analyzing trace with hash -778414572, now seen corresponding path program 1 times [2019-11-06 21:55:35,731 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:35,731 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255245662] [2019-11-06 21:55:35,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,010 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:55:36,136 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255245662] [2019-11-06 21:55:36,137 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:36,137 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:55:36,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070956514] [2019-11-06 21:55:36,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:55:36,138 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:36,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:55:36,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:55:36,139 INFO L87 Difference]: Start difference. First operand 391 states and 443 transitions. Second operand 7 states. [2019-11-06 21:55:36,562 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:37,063 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:39,106 INFO L93 Difference]: Finished difference Result 1153 states and 1472 transitions. [2019-11-06 21:55:39,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 21:55:39,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-11-06 21:55:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:39,112 INFO L225 Difference]: With dead ends: 1153 [2019-11-06 21:55:39,112 INFO L226 Difference]: Without dead ends: 786 [2019-11-06 21:55:39,114 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:55:39,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2019-11-06 21:55:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 687. [2019-11-06 21:55:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2019-11-06 21:55:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 813 transitions. [2019-11-06 21:55:39,246 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 813 transitions. Word has length 98 [2019-11-06 21:55:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:39,247 INFO L462 AbstractCegarLoop]: Abstraction has 687 states and 813 transitions. [2019-11-06 21:55:39,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:55:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 813 transitions. [2019-11-06 21:55:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-06 21:55:39,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:39,251 INFO L410 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] [2019-11-06 21:55:39,251 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:39,252 INFO L82 PathProgramCache]: Analyzing trace with hash 469491758, now seen corresponding path program 1 times [2019-11-06 21:55:39,252 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:39,252 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412176315] [2019-11-06 21:55:39,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,628 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:55:39,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412176315] [2019-11-06 21:55:39,856 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046344034] [2019-11-06 21:55:39,856 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 [2019-11-06 21:55:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:40,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:55:40,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:55:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:40,291 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:55:40,291 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-11-06 21:55:40,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902496227] [2019-11-06 21:55:40,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:55:40,292 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:40,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:55:40,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:55:40,293 INFO L87 Difference]: Start difference. First operand 687 states and 813 transitions. Second operand 8 states. [2019-11-06 21:55:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:40,745 INFO L93 Difference]: Finished difference Result 1316 states and 1568 transitions. [2019-11-06 21:55:40,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:55:40,746 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2019-11-06 21:55:40,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:40,752 INFO L225 Difference]: With dead ends: 1316 [2019-11-06 21:55:40,752 INFO L226 Difference]: Without dead ends: 653 [2019-11-06 21:55:40,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:55:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2019-11-06 21:55:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2019-11-06 21:55:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2019-11-06 21:55:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 759 transitions. [2019-11-06 21:55:40,917 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 759 transitions. Word has length 102 [2019-11-06 21:55:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:40,917 INFO L462 AbstractCegarLoop]: Abstraction has 653 states and 759 transitions. [2019-11-06 21:55:40,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:55:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 759 transitions. [2019-11-06 21:55:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-06 21:55:40,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:40,921 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:55:41,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:55:41,126 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:41,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:41,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1698521745, now seen corresponding path program 1 times [2019-11-06 21:55:41,127 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:41,127 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491429938] [2019-11-06 21:55:41,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,506 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-06 21:55:41,864 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491429938] [2019-11-06 21:55:41,865 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650102285] [2019-11-06 21:55:41,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:55:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:42,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 21:55:42,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:55:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:55:42,289 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:55:42,290 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 19 [2019-11-06 21:55:42,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875729222] [2019-11-06 21:55:42,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:55:42,291 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:42,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:55:42,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:55:42,291 INFO L87 Difference]: Start difference. First operand 653 states and 759 transitions. Second operand 9 states. [2019-11-06 21:55:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:43,950 INFO L93 Difference]: Finished difference Result 1670 states and 2163 transitions. [2019-11-06 21:55:43,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:55:43,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2019-11-06 21:55:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:43,959 INFO L225 Difference]: With dead ends: 1670 [2019-11-06 21:55:43,960 INFO L226 Difference]: Without dead ends: 1165 [2019-11-06 21:55:43,964 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 202 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2019-11-06 21:55:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2019-11-06 21:55:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 931. [2019-11-06 21:55:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2019-11-06 21:55:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1094 transitions. [2019-11-06 21:55:44,157 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1094 transitions. Word has length 155 [2019-11-06 21:55:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:44,158 INFO L462 AbstractCegarLoop]: Abstraction has 931 states and 1094 transitions. [2019-11-06 21:55:44,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:55:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1094 transitions. [2019-11-06 21:55:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-06 21:55:44,161 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:44,161 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]