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_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:33:58,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:33:58,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:33:58,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:33:58,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:33:58,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:33:58,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:33:58,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:33:58,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:33:58,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:33:58,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:33:58,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:33:58,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:33:58,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:33:58,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:33:58,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:33:58,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:33:58,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:33:58,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:33:58,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:33:58,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:33:58,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:33:58,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:33:58,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:33:58,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:33:58,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:33:58,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:33:58,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:33:58,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:33:58,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:33:58,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:33:58,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:33:58,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:33:58,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:33:58,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:33:58,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:33:58,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:33:58,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:33:58,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:33:58,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:33:58,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:33:58,379 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 23:33:58,394 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:33:58,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:33:58,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:33:58,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:33:58,396 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:33:58,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:33:58,396 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:33:58,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:33:58,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:33:58,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:33:58,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:33:58,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:33:58,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:33:58,398 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:33:58,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:33:58,398 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:33:58,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:33:58,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:33:58,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:33:58,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:33:58,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:33:58,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:33:58,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:33:58,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:33:58,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:33:58,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:33:58,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:33:58,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:33:58,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:33:58,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:33:58,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:33:58,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:33:58,751 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:33:58,751 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:33:58,752 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2019-10-14 23:33:58,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86773879b/4153ddbbcf054a58ab1bc0375fbc695c/FLAGe4a1e52e4 [2019-10-14 23:33:59,354 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:33:59,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2019-10-14 23:33:59,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86773879b/4153ddbbcf054a58ab1bc0375fbc695c/FLAGe4a1e52e4 [2019-10-14 23:33:59,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86773879b/4153ddbbcf054a58ab1bc0375fbc695c [2019-10-14 23:33:59,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:33:59,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:33:59,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:59,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:33:59,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:33:59,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:59" (1/1) ... [2019-10-14 23:33:59,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a33d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:59, skipping insertion in model container [2019-10-14 23:33:59,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:59" (1/1) ... [2019-10-14 23:33:59,744 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:33:59,815 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:34:00,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:34:00,290 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:34:00,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:34:00,418 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:34:00,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00 WrapperNode [2019-10-14 23:34:00,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:34:00,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:34:00,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:34:00,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:34:00,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (1/1) ... [2019-10-14 23:34:00,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (1/1) ... [2019-10-14 23:34:00,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (1/1) ... [2019-10-14 23:34:00,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (1/1) ... [2019-10-14 23:34:00,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (1/1) ... [2019-10-14 23:34:00,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (1/1) ... [2019-10-14 23:34:00,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (1/1) ... [2019-10-14 23:34:00,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:34:00,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:34:00,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:34:00,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:34:00,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (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 23:34:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:34:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:34:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:34:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:34:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:34:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:34:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:34:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:34:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:34:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:34:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:34:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:34:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:34:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:34:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:34:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:34:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:34:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:34:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:34:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:34:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:34:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:34:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:34:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:34:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:34:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:34:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:34:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:34:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:34:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:34:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:34:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:34:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:34:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:34:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:34:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:34:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:34:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:34:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:34:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:34:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:34:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:34:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:34:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:34:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:34:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:34:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:34:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:34:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:34:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:34:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:34:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:34:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:34:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:34:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:34:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:34:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:34:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:34:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:34:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:34:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:34:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:34:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:34:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:34:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:34:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:34:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:34:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:34:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:34:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:34:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:34:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:34:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:34:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:34:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:34:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:34:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:34:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:34:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:34:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:34:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:34:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:34:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:34:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:34:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:34:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:34:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:34:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:34:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:34:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:34:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:34:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:34:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:34:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:34:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:34:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:34:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:34:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:34:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:34:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:34:01,770 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:34:01,772 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:34:01,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:34:01 BoogieIcfgContainer [2019-10-14 23:34:01,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:34:01,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:34:01,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:34:01,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:34:01,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:33:59" (1/3) ... [2019-10-14 23:34:01,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6651b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:34:01, skipping insertion in model container [2019-10-14 23:34:01,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:00" (2/3) ... [2019-10-14 23:34:01,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6651b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:34:01, skipping insertion in model container [2019-10-14 23:34:01,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:34:01" (3/3) ... [2019-10-14 23:34:01,784 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2019-10-14 23:34:01,795 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:34:01,806 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:34:01,818 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:34:01,857 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:34:01,858 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:34:01,858 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:34:01,858 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:34:01,859 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:34:01,859 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:34:01,859 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:34:01,859 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:34:01,885 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2019-10-14 23:34:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:34:01,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:01,897 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:01,900 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:01,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2019-10-14 23:34:01,913 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:01,914 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658573565] [2019-10-14 23:34:01,914 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:01,914 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:01,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,641 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,755 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 23:34:02,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658573565] [2019-10-14 23:34:02,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:02,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:34:02,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585740987] [2019-10-14 23:34:02,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:34:02,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:02,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:34:02,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:34:02,783 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2019-10-14 23:34:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:04,133 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2019-10-14 23:34:04,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:34:04,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:34:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:04,156 INFO L225 Difference]: With dead ends: 354 [2019-10-14 23:34:04,156 INFO L226 Difference]: Without dead ends: 191 [2019-10-14 23:34:04,161 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:34:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-10-14 23:34:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2019-10-14 23:34:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-10-14 23:34:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2019-10-14 23:34:04,259 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2019-10-14 23:34:04,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:04,260 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2019-10-14 23:34:04,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:34:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2019-10-14 23:34:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:34:04,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:04,263 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:04,264 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:04,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:04,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2019-10-14 23:34:04,264 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:04,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917553583] [2019-10-14 23:34:04,265 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:04,265 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:04,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:04,655 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:04,689 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 23:34:04,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917553583] [2019-10-14 23:34:04,690 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:04,690 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:34:04,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919096987] [2019-10-14 23:34:04,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:34:04,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:04,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:34:04,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:34:04,693 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2019-10-14 23:34:05,139 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:06,180 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2019-10-14 23:34:06,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:34:06,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:34:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:06,190 INFO L225 Difference]: With dead ends: 283 [2019-10-14 23:34:06,190 INFO L226 Difference]: Without dead ends: 175 [2019-10-14 23:34:06,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:34:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-14 23:34:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2019-10-14 23:34:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-14 23:34:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2019-10-14 23:34:06,277 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2019-10-14 23:34:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:06,278 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2019-10-14 23:34:06,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:34:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2019-10-14 23:34:06,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:34:06,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:06,280 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 23:34:06,281 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:06,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:06,281 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2019-10-14 23:34:06,281 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:06,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382114237] [2019-10-14 23:34:06,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:06,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:06,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,630 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,767 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 23:34:06,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382114237] [2019-10-14 23:34:06,768 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:06,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:34:06,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587067422] [2019-10-14 23:34:06,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:06,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:06,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:06,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:34:06,771 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2019-10-14 23:34:07,166 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:07,508 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:34:07,766 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:08,018 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:09,626 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2019-10-14 23:34:09,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:34:09,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 23:34:09,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:09,630 INFO L225 Difference]: With dead ends: 296 [2019-10-14 23:34:09,631 INFO L226 Difference]: Without dead ends: 175 [2019-10-14 23:34:09,632 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:34:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-14 23:34:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2019-10-14 23:34:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-14 23:34:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2019-10-14 23:34:09,669 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2019-10-14 23:34:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:09,669 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2019-10-14 23:34:09,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:09,670 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2019-10-14 23:34:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:34:09,676 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:09,676 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] [2019-10-14 23:34:09,676 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:09,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2019-10-14 23:34:09,677 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:09,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702076424] [2019-10-14 23:34:09,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:09,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:09,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,042 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,129 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 23:34:10,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702076424] [2019-10-14 23:34:10,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:10,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:34:10,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615840000] [2019-10-14 23:34:10,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:34:10,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:10,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:34:10,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:34:10,132 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2019-10-14 23:34:10,525 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:11,908 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:12,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:12,903 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2019-10-14 23:34:12,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:12,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-14 23:34:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:12,908 INFO L225 Difference]: With dead ends: 404 [2019-10-14 23:34:12,908 INFO L226 Difference]: Without dead ends: 283 [2019-10-14 23:34:12,909 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 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 23:34:12,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-10-14 23:34:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2019-10-14 23:34:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2019-10-14 23:34:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2019-10-14 23:34:12,989 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2019-10-14 23:34:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:12,990 INFO L462 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2019-10-14 23:34:12,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:34:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2019-10-14 23:34:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:34:12,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:12,992 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] [2019-10-14 23:34:12,992 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:12,993 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2019-10-14 23:34:12,993 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:12,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846819584] [2019-10-14 23:34:12,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:12,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:12,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,317 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:13,414 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 23:34:13,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846819584] [2019-10-14 23:34:13,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:13,415 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:34:13,415 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594373494] [2019-10-14 23:34:13,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:13,416 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:13,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:13,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:34:13,416 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2019-10-14 23:34:13,871 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:15,059 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:15,459 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:16,110 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:16,395 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:16,743 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:18,070 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2019-10-14 23:34:18,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:18,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-14 23:34:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:18,076 INFO L225 Difference]: With dead ends: 718 [2019-10-14 23:34:18,076 INFO L226 Difference]: Without dead ends: 502 [2019-10-14 23:34:18,078 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:34:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2019-10-14 23:34:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2019-10-14 23:34:18,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-10-14 23:34:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2019-10-14 23:34:18,180 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2019-10-14 23:34:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:18,181 INFO L462 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2019-10-14 23:34:18,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2019-10-14 23:34:18,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:34:18,183 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:18,183 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] [2019-10-14 23:34:18,183 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:18,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:18,184 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2019-10-14 23:34:18,184 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:18,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288994530] [2019-10-14 23:34:18,184 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:18,184 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:18,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,498 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:18,669 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 23:34:18,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288994530] [2019-10-14 23:34:18,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:18,670 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:18,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952445665] [2019-10-14 23:34:18,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:18,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:18,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:18,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:18,673 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2019-10-14 23:34:19,412 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:20,793 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:21,086 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:22,237 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:22,537 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:22,790 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:23,169 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2019-10-14 23:34:23,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:34:23,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2019-10-14 23:34:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:23,181 INFO L225 Difference]: With dead ends: 544 [2019-10-14 23:34:23,181 INFO L226 Difference]: Without dead ends: 541 [2019-10-14 23:34:23,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:34:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-10-14 23:34:23,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2019-10-14 23:34:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-10-14 23:34:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2019-10-14 23:34:23,296 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2019-10-14 23:34:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:23,297 INFO L462 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2019-10-14 23:34:23,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2019-10-14 23:34:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:34:23,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:23,299 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] [2019-10-14 23:34:23,299 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:23,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2019-10-14 23:34:23,299 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:23,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114776013] [2019-10-14 23:34:23,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:23,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:23,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,562 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:23,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114776013] [2019-10-14 23:34:23,737 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:23,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:23,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972982205] [2019-10-14 23:34:23,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:23,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:23,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:23,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:23,740 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2019-10-14 23:34:24,828 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:25,072 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:34:25,326 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:25,568 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:26,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:26,943 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2019-10-14 23:34:26,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:26,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2019-10-14 23:34:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:26,947 INFO L225 Difference]: With dead ends: 960 [2019-10-14 23:34:26,948 INFO L226 Difference]: Without dead ends: 549 [2019-10-14 23:34:26,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:34:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2019-10-14 23:34:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2019-10-14 23:34:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-14 23:34:27,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2019-10-14 23:34:27,031 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2019-10-14 23:34:27,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:27,031 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2019-10-14 23:34:27,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:27,032 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2019-10-14 23:34:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:34:27,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:27,034 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] [2019-10-14 23:34:27,034 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:27,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2019-10-14 23:34:27,035 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:27,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078335399] [2019-10-14 23:34:27,035 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:27,035 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:27,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,314 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:27,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078335399] [2019-10-14 23:34:27,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:27,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:34:27,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330585662] [2019-10-14 23:34:27,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:34:27,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:27,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:34:27,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:34:27,510 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2019-10-14 23:34:28,097 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:28,369 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:28,645 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:29,362 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:29,634 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:29,885 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:31,400 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2019-10-14 23:34:31,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:31,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2019-10-14 23:34:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:31,405 INFO L225 Difference]: With dead ends: 980 [2019-10-14 23:34:31,405 INFO L226 Difference]: Without dead ends: 559 [2019-10-14 23:34:31,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:34:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2019-10-14 23:34:31,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2019-10-14 23:34:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2019-10-14 23:34:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2019-10-14 23:34:31,500 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2019-10-14 23:34:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:31,501 INFO L462 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2019-10-14 23:34:31,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:34:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2019-10-14 23:34:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:34:31,503 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:31,503 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] [2019-10-14 23:34:31,504 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:31,504 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2019-10-14 23:34:31,505 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:31,505 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231523576] [2019-10-14 23:34:31,505 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:31,505 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:31,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,825 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:31,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231523576] [2019-10-14 23:34:31,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:31,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:34:31,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378491511] [2019-10-14 23:34:31,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:34:31,967 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:31,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:34:31,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:34:31,967 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2019-10-14 23:34:32,331 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:32,883 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:35,499 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2019-10-14 23:34:35,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:34:35,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-10-14 23:34:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:35,504 INFO L225 Difference]: With dead ends: 1342 [2019-10-14 23:34:35,505 INFO L226 Difference]: Without dead ends: 913 [2019-10-14 23:34:35,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:34:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2019-10-14 23:34:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2019-10-14 23:34:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2019-10-14 23:34:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2019-10-14 23:34:35,686 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2019-10-14 23:34:35,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:35,688 INFO L462 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2019-10-14 23:34:35,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:34:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2019-10-14 23:34:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-14 23:34:35,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:35,692 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] [2019-10-14 23:34:35,692 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:35,692 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2019-10-14 23:34:35,693 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:35,693 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479227358] [2019-10-14 23:34:35,693 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:35,693 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:35,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,131 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,493 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 23:34:36,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479227358] [2019-10-14 23:34:36,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047070446] [2019-10-14 23:34:36,494 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 23:34:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:36,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:34:36,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:34:36,897 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 23:34:36,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:34:36,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-14 23:34:36,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840978631] [2019-10-14 23:34:36,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:36,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:36,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:36,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:36,899 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 8 states. [2019-10-14 23:34:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:37,542 INFO L93 Difference]: Finished difference Result 1526 states and 1799 transitions. [2019-10-14 23:34:37,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:34:37,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-10-14 23:34:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:37,549 INFO L225 Difference]: With dead ends: 1526 [2019-10-14 23:34:37,549 INFO L226 Difference]: Without dead ends: 757 [2019-10-14 23:34:37,553 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2019-10-14 23:34:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2019-10-14 23:34:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2019-10-14 23:34:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 872 transitions. [2019-10-14 23:34:37,732 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 872 transitions. Word has length 108 [2019-10-14 23:34:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:37,733 INFO L462 AbstractCegarLoop]: Abstraction has 757 states and 872 transitions. [2019-10-14 23:34:37,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 872 transitions. [2019-10-14 23:34:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-14 23:34:37,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:37,737 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:37,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:34:37,944 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:37,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:37,945 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2019-10-14 23:34:37,945 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:37,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953158759] [2019-10-14 23:34:37,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:37,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:37,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat