java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:37:02,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:37:02,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:37:02,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:37:02,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:37:02,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:37:02,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:37:02,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:37:02,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:37:02,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:37:02,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:37:02,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:37:02,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:37:02,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:37:02,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:37:02,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:37:02,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:37:02,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:37:02,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:37:02,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:37:02,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:37:02,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:37:02,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:37:02,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:37:02,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:37:02,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:37:02,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:37:02,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:37:02,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:37:02,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:37:02,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:37:02,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:37:02,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:37:02,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:37:02,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:37:02,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:37:02,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:37:02,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:37:02,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:37:02,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:37:02,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:37:02,550 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:37:02,572 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:37:02,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:37:02,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:37:02,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:37:02,574 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:37:02,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:37:02,575 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:37:02,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:37:02,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:37:02,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:37:02,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:37:02,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:37:02,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:37:02,578 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:37:02,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:37:02,578 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:37:02,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:37:02,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:37:02,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:37:02,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:37:02,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:37:02,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:37:02,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:37:02,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:37:02,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:37:02,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:37:02,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:37:02,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:37:02,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:37:02,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:37:02,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:37:02,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:37:02,912 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:37:02,912 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:37:02,913 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product61.cil.c [2019-10-14 23:37:02,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68bfca041/239f69f614594f0785ed8eaa93ddb5e4/FLAG208d17e28 [2019-10-14 23:37:03,533 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:37:03,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product61.cil.c [2019-10-14 23:37:03,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68bfca041/239f69f614594f0785ed8eaa93ddb5e4/FLAG208d17e28 [2019-10-14 23:37:03,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68bfca041/239f69f614594f0785ed8eaa93ddb5e4 [2019-10-14 23:37:03,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:37:03,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:37:03,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:37:03,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:37:03,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:37:03,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:37:03" (1/1) ... [2019-10-14 23:37:03,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c301fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:03, skipping insertion in model container [2019-10-14 23:37:03,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:37:03" (1/1) ... [2019-10-14 23:37:03,852 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:37:03,920 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:37:04,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:37:04,450 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:37:04,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:37:04,559 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:37:04,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04 WrapperNode [2019-10-14 23:37:04,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:37:04,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:37:04,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:37:04,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:37:04,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (1/1) ... [2019-10-14 23:37:04,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (1/1) ... [2019-10-14 23:37:04,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (1/1) ... [2019-10-14 23:37:04,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (1/1) ... [2019-10-14 23:37:04,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (1/1) ... [2019-10-14 23:37:04,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (1/1) ... [2019-10-14 23:37:04,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (1/1) ... [2019-10-14 23:37:04,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:37:04,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:37:04,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:37:04,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:37:04,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:37:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:37:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:37:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:37:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:37:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:37:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:37:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:37:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:37:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:37:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:37:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:37:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:37:04,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:37:04,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:37:04,705 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:37:04,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:37:04,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:37:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:37:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:37:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:37:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:37:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:37:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:37:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:37:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:37:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:37:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:37:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:37:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:37:04,708 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:37:04,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:37:04,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:37:04,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:37:04,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:37:04,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:37:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:37:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:37:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:37:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:37:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:37:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:37:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:37:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:37:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:37:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:37:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:37:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:37:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:37:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:37:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:37:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:37:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:37:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:37:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:37:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:37:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:37:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:37:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:37:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:37:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:37:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:37:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:37:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:37:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:37:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:37:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:37:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:37:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:37:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:37:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:37:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:37:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:37:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:37:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:37:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:37:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:37:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:37:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:37:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:37:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:37:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:37:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:37:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:37:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:37:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:37:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:37:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:37:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:37:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:37:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:37:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:37:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:37:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:37:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:37:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:37:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:37:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:37:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:37:05,893 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:37:05,894 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:37:05,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:37:05 BoogieIcfgContainer [2019-10-14 23:37:05,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:37:05,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:37:05,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:37:05,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:37:05,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:37:03" (1/3) ... [2019-10-14 23:37:05,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dcc80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:37:05, skipping insertion in model container [2019-10-14 23:37:05,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:04" (2/3) ... [2019-10-14 23:37:05,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dcc80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:37:05, skipping insertion in model container [2019-10-14 23:37:05,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:37:05" (3/3) ... [2019-10-14 23:37:05,909 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product61.cil.c [2019-10-14 23:37:05,919 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:37:05,930 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:37:05,942 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:37:05,979 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:37:05,979 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:37:05,980 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:37:05,980 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:37:05,980 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:37:05,980 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:37:05,981 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:37:05,981 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:37:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2019-10-14 23:37:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:37:06,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:06,014 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:06,016 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:06,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1302944760, now seen corresponding path program 1 times [2019-10-14 23:37:06,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:06,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908687598] [2019-10-14 23:37:06,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:06,033 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:06,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,673 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:06,791 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908687598] [2019-10-14 23:37:06,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:06,793 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:37:06,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369494774] [2019-10-14 23:37:06,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:37:06,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:06,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:37:06,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:37:06,818 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2019-10-14 23:37:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:08,150 INFO L93 Difference]: Finished difference Result 357 states and 465 transitions. [2019-10-14 23:37:08,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:37:08,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:37:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:08,170 INFO L225 Difference]: With dead ends: 357 [2019-10-14 23:37:08,170 INFO L226 Difference]: Without dead ends: 192 [2019-10-14 23:37:08,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:37:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2019-10-14 23:37:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 156. [2019-10-14 23:37:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-10-14 23:37:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2019-10-14 23:37:08,273 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 52 [2019-10-14 23:37:08,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:08,273 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2019-10-14 23:37:08,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:37:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2019-10-14 23:37:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:37:08,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:08,278 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:08,279 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:08,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:08,279 INFO L82 PathProgramCache]: Analyzing trace with hash -279757305, now seen corresponding path program 1 times [2019-10-14 23:37:08,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:08,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804155687] [2019-10-14 23:37:08,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:08,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:08,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,633 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:08,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804155687] [2019-10-14 23:37:08,671 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:08,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:37:08,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388016318] [2019-10-14 23:37:08,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:37:08,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:08,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:37:08,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:37:08,674 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand 4 states. [2019-10-14 23:37:09,122 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:10,251 INFO L93 Difference]: Finished difference Result 290 states and 356 transitions. [2019-10-14 23:37:10,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:37:10,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:37:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:10,255 INFO L225 Difference]: With dead ends: 290 [2019-10-14 23:37:10,255 INFO L226 Difference]: Without dead ends: 176 [2019-10-14 23:37:10,258 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:37:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-10-14 23:37:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 147. [2019-10-14 23:37:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-10-14 23:37:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2019-10-14 23:37:10,304 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 53 [2019-10-14 23:37:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:10,305 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2019-10-14 23:37:10,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:37:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2019-10-14 23:37:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:37:10,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:10,327 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:10,327 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1451505581, now seen corresponding path program 1 times [2019-10-14 23:37:10,328 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:10,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868560076] [2019-10-14 23:37:10,328 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:10,328 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:10,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,705 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:10,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868560076] [2019-10-14 23:37:10,782 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:10,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:10,783 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998468341] [2019-10-14 23:37:10,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:10,783 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:10,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:10,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:10,784 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 8 states. [2019-10-14 23:37:11,308 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:11,661 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,964 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:12,218 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:13,759 INFO L93 Difference]: Finished difference Result 299 states and 370 transitions. [2019-10-14 23:37:13,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:13,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:37:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:13,766 INFO L225 Difference]: With dead ends: 299 [2019-10-14 23:37:13,768 INFO L226 Difference]: Without dead ends: 176 [2019-10-14 23:37:13,771 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-10-14 23:37:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 147. [2019-10-14 23:37:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-10-14 23:37:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2019-10-14 23:37:13,815 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 57 [2019-10-14 23:37:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:13,816 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2019-10-14 23:37:13,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2019-10-14 23:37:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-14 23:37:13,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:13,819 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:13,820 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2075034732, now seen corresponding path program 1 times [2019-10-14 23:37:13,820 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:13,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693005318] [2019-10-14 23:37:13,821 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:13,821 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:13,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,146 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:14,303 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693005318] [2019-10-14 23:37:14,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:14,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:37:14,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374634569] [2019-10-14 23:37:14,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:37:14,305 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:14,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:37:14,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:37:14,306 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand 6 states. [2019-10-14 23:37:14,738 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:15,990 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:17,018 INFO L93 Difference]: Finished difference Result 414 states and 512 transitions. [2019-10-14 23:37:17,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:37:17,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-14 23:37:17,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:17,023 INFO L225 Difference]: With dead ends: 414 [2019-10-14 23:37:17,028 INFO L226 Difference]: Without dead ends: 291 [2019-10-14 23:37:17,029 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:37:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-10-14 23:37:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 250. [2019-10-14 23:37:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-10-14 23:37:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 285 transitions. [2019-10-14 23:37:17,091 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 285 transitions. Word has length 75 [2019-10-14 23:37:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:17,092 INFO L462 AbstractCegarLoop]: Abstraction has 250 states and 285 transitions. [2019-10-14 23:37:17,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 285 transitions. [2019-10-14 23:37:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:17,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:17,095 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:17,095 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:17,096 INFO L82 PathProgramCache]: Analyzing trace with hash -466354007, now seen corresponding path program 1 times [2019-10-14 23:37:17,096 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:17,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451048883] [2019-10-14 23:37:17,096 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:17,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:17,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,461 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:17,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451048883] [2019-10-14 23:37:17,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:17,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:17,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455874469] [2019-10-14 23:37:17,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:17,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:17,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:17,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:17,561 INFO L87 Difference]: Start difference. First operand 250 states and 285 transitions. Second operand 8 states. [2019-10-14 23:37:18,085 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:19,759 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:20,042 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:20,300 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:20,547 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:21,543 INFO L93 Difference]: Finished difference Result 656 states and 809 transitions. [2019-10-14 23:37:21,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:21,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-14 23:37:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:21,549 INFO L225 Difference]: With dead ends: 656 [2019-10-14 23:37:21,549 INFO L226 Difference]: Without dead ends: 430 [2019-10-14 23:37:21,551 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2019-10-14 23:37:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 390. [2019-10-14 23:37:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2019-10-14 23:37:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 452 transitions. [2019-10-14 23:37:21,656 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 452 transitions. Word has length 89 [2019-10-14 23:37:21,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:21,657 INFO L462 AbstractCegarLoop]: Abstraction has 390 states and 452 transitions. [2019-10-14 23:37:21,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 452 transitions. [2019-10-14 23:37:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:37:21,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:21,661 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:21,661 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:21,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1062079729, now seen corresponding path program 1 times [2019-10-14 23:37:21,663 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:21,663 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558663866] [2019-10-14 23:37:21,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:21,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:21,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,029 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:22,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558663866] [2019-10-14 23:37:22,150 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:22,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:22,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411237710] [2019-10-14 23:37:22,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:22,152 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:22,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:22,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:22,152 INFO L87 Difference]: Start difference. First operand 390 states and 452 transitions. Second operand 10 states. [2019-10-14 23:37:22,670 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:24,524 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:24,914 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:25,174 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:25,429 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:25,738 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:27,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:27,207 INFO L93 Difference]: Finished difference Result 895 states and 1121 transitions. [2019-10-14 23:37:27,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:27,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2019-10-14 23:37:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:27,212 INFO L225 Difference]: With dead ends: 895 [2019-10-14 23:37:27,212 INFO L226 Difference]: Without dead ends: 658 [2019-10-14 23:37:27,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:37:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-10-14 23:37:27,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 590. [2019-10-14 23:37:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-14 23:37:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 695 transitions. [2019-10-14 23:37:27,309 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 695 transitions. Word has length 93 [2019-10-14 23:37:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:27,310 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 695 transitions. [2019-10-14 23:37:27,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 695 transitions. [2019-10-14 23:37:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:37:27,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:27,312 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:27,312 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:27,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1297227280, now seen corresponding path program 1 times [2019-10-14 23:37:27,313 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:27,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033270191] [2019-10-14 23:37:27,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:27,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:27,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,584 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:27,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033270191] [2019-10-14 23:37:27,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:27,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:27,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552322307] [2019-10-14 23:37:27,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:27,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:27,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:27,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:27,707 INFO L87 Difference]: Start difference. First operand 590 states and 695 transitions. Second operand 8 states. [2019-10-14 23:37:28,603 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:28,865 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:29,133 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:30,439 INFO L93 Difference]: Finished difference Result 1087 states and 1326 transitions. [2019-10-14 23:37:30,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:30,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-14 23:37:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:30,445 INFO L225 Difference]: With dead ends: 1087 [2019-10-14 23:37:30,446 INFO L226 Difference]: Without dead ends: 646 [2019-10-14 23:37:30,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2019-10-14 23:37:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 590. [2019-10-14 23:37:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-14 23:37:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 694 transitions. [2019-10-14 23:37:30,552 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 694 transitions. Word has length 93 [2019-10-14 23:37:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:30,553 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 694 transitions. [2019-10-14 23:37:30,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 694 transitions. [2019-10-14 23:37:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:37:30,555 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:30,555 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:30,556 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1956758802, now seen corresponding path program 1 times [2019-10-14 23:37:30,556 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:30,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432777089] [2019-10-14 23:37:30,557 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:30,557 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:30,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,828 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:30,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432777089] [2019-10-14 23:37:30,998 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:30,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:30,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606859981] [2019-10-14 23:37:30,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:30,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:31,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:31,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:31,000 INFO L87 Difference]: Start difference. First operand 590 states and 694 transitions. Second operand 12 states. [2019-10-14 23:37:31,944 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:32,202 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:32,448 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:33,190 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:33,476 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:33,757 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:34,018 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:35,816 INFO L93 Difference]: Finished difference Result 1223 states and 1502 transitions. [2019-10-14 23:37:35,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:35,816 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2019-10-14 23:37:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:35,822 INFO L225 Difference]: With dead ends: 1223 [2019-10-14 23:37:35,823 INFO L226 Difference]: Without dead ends: 657 [2019-10-14 23:37:35,825 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:37:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-14 23:37:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 597. [2019-10-14 23:37:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2019-10-14 23:37:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 701 transitions. [2019-10-14 23:37:35,930 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 701 transitions. Word has length 93 [2019-10-14 23:37:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:35,930 INFO L462 AbstractCegarLoop]: Abstraction has 597 states and 701 transitions. [2019-10-14 23:37:35,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 701 transitions. [2019-10-14 23:37:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-14 23:37:35,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:35,934 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:35,935 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:35,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2046113513, now seen corresponding path program 1 times [2019-10-14 23:37:35,935 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:35,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710838449] [2019-10-14 23:37:35,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:35,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:35,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,231 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:36,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710838449] [2019-10-14 23:37:36,488 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206095061] [2019-10-14 23:37:36,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-14 23:37:36,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:36,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:37:36,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-14 23:37:36,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102581098] [2019-10-14 23:37:36,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:36,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:36,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:36,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:36,887 INFO L87 Difference]: Start difference. First operand 597 states and 701 transitions. Second operand 8 states. [2019-10-14 23:37:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:37,665 INFO L93 Difference]: Finished difference Result 1728 states and 2073 transitions. [2019-10-14 23:37:37,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:37,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-14 23:37:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:37,672 INFO L225 Difference]: With dead ends: 1728 [2019-10-14 23:37:37,673 INFO L226 Difference]: Without dead ends: 1155 [2019-10-14 23:37:37,675 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-10-14 23:37:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1152. [2019-10-14 23:37:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2019-10-14 23:37:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1356 transitions. [2019-10-14 23:37:37,936 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1356 transitions. Word has length 105 [2019-10-14 23:37:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:37,936 INFO L462 AbstractCegarLoop]: Abstraction has 1152 states and 1356 transitions. [2019-10-14 23:37:37,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1356 transitions. [2019-10-14 23:37:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-14 23:37:37,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:37,940 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:38,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:38,155 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:38,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1643042107, now seen corresponding path program 1 times [2019-10-14 23:37:38,156 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:38,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792833043] [2019-10-14 23:37:38,157 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:38,157 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:38,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,510 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:38,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792833043] [2019-10-14 23:37:38,674 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:38,674 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:37:38,674 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887394880] [2019-10-14 23:37:38,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:37:38,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:38,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:37:38,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:38,676 INFO L87 Difference]: Start difference. First operand 1152 states and 1356 transitions. Second operand 14 states. [2019-10-14 23:37:39,568 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:39,847 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:40,137 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:40,861 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186