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-f4eb214f-m [2019-10-13 19:35:01,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:35:01,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:35:01,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:35:01,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:35:01,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:35:01,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:35:01,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:35:01,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:35:01,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:35:01,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:35:01,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:35:01,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:35:01,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:35:01,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:35:01,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:35:01,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:35:01,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:35:01,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:35:01,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:35:01,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:35:01,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:35:01,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:35:01,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:35:01,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:35:01,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:35:01,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:35:01,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:35:01,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:35:01,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:35:01,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:35:01,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:35:01,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:35:01,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:35:01,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:35:01,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:35:01,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:35:01,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:35:01,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:35:01,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:35:01,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:35:01,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:35:01,371 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:35:01,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:35:01,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:35:01,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:35:01,373 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:35:01,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:35:01,373 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:35:01,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:35:01,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:35:01,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:35:01,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:35:01,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:35:01,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:35:01,375 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:35:01,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:35:01,375 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:35:01,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:35:01,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:35:01,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:35:01,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:35:01,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:35:01,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:35:01,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:35:01,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:35:01,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:35:01,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:35:01,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:35:01,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:35:01,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:35:01,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:35:01,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:35:01,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:35:01,742 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:35:01,742 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:35:01,743 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2019-10-13 19:35:01,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc682c05b/33d495c89dc3474383ddc6da7c3e2932/FLAG626c0fc23 [2019-10-13 19:35:02,315 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:35:02,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2019-10-13 19:35:02,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc682c05b/33d495c89dc3474383ddc6da7c3e2932/FLAG626c0fc23 [2019-10-13 19:35:02,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc682c05b/33d495c89dc3474383ddc6da7c3e2932 [2019-10-13 19:35:02,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:35:02,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:35:02,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:35:02,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:35:02,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:35:02,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240d376e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:02, skipping insertion in model container [2019-10-13 19:35:02,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:02" (1/1) ... [2019-10-13 19:35:02,716 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:35:02,778 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:35:03,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:35:03,243 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:35:03,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:35:03,388 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:35:03,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03 WrapperNode [2019-10-13 19:35:03,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:35:03,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:35:03,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:35:03,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:35:03,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (1/1) ... [2019-10-13 19:35:03,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (1/1) ... [2019-10-13 19:35:03,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (1/1) ... [2019-10-13 19:35:03,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (1/1) ... [2019-10-13 19:35:03,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (1/1) ... [2019-10-13 19:35:03,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (1/1) ... [2019-10-13 19:35:03,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (1/1) ... [2019-10-13 19:35:03,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:35:03,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:35:03,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:35:03,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:35:03,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:35:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:35:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:35:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:35:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:35:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:35:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:35:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:35:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:35:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:35:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:35:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:35:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:35:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:35:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:35:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:35:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:35:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:35:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:35:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:35:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:35:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:35:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:35:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:35:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:35:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:35:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:35:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:35:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:35:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:35:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:35:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:35:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:35:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:35:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:35:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:35:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:35:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:35:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:35:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:35:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:35:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:35:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:35:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:35:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:35:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:35:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:35:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:35:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:35:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:35:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:35:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:35:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:35:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:35:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:35:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:35:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:35:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:35:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:35:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:35:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:35:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:35:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:35:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:35:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:35:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:35:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:35:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:35:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:35:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:35:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:35:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:35:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:35:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:35:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:35:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:35:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:35:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:35:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:35:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:35:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:35:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:35:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:35:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:35:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:35:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:35:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:35:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:35:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:35:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:35:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:35:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:35:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:35:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:35:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:35:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:35:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:35:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:35:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:35:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:35:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:35:04,605 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:35:04,606 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:35:04,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:04 BoogieIcfgContainer [2019-10-13 19:35:04,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:35:04,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:35:04,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:35:04,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:35:04,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:35:02" (1/3) ... [2019-10-13 19:35:04,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d1ef87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:04, skipping insertion in model container [2019-10-13 19:35:04,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:03" (2/3) ... [2019-10-13 19:35:04,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d1ef87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:04, skipping insertion in model container [2019-10-13 19:35:04,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:04" (3/3) ... [2019-10-13 19:35:04,616 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2019-10-13 19:35:04,626 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:35:04,635 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:35:04,646 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:35:04,674 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:35:04,674 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:35:04,674 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:35:04,675 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:35:04,675 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:35:04,675 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:35:04,676 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:35:04,676 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:35:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2019-10-13 19:35:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:35:04,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:04,713 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] [2019-10-13 19:35:04,715 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:04,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2019-10-13 19:35:04,730 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:04,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205182090] [2019-10-13 19:35:04,731 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:04,731 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:04,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:05,366 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:05,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205182090] [2019-10-13 19:35:05,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:05,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:35:05,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243018393] [2019-10-13 19:35:05,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:35:05,494 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:05,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:35:05,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:35:05,512 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2019-10-13 19:35:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:06,871 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2019-10-13 19:35:06,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:35:06,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:35:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:06,901 INFO L225 Difference]: With dead ends: 354 [2019-10-13 19:35:06,902 INFO L226 Difference]: Without dead ends: 191 [2019-10-13 19:35:06,910 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 [2019-10-13 19:35:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-10-13 19:35:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2019-10-13 19:35:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-10-13 19:35:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2019-10-13 19:35:07,000 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2019-10-13 19:35:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:07,001 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2019-10-13 19:35:07,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:35:07,001 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2019-10-13 19:35:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:35:07,005 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:07,005 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] [2019-10-13 19:35:07,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:07,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2019-10-13 19:35:07,006 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:07,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844013245] [2019-10-13 19:35:07,006 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:07,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:07,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,372 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:07,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844013245] [2019-10-13 19:35:07,405 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:07,405 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:35:07,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124293169] [2019-10-13 19:35:07,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:35:07,407 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:07,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:35:07,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:35:07,408 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2019-10-13 19:35:07,862 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:08,944 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2019-10-13 19:35:08,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:35:08,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:35:08,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:08,948 INFO L225 Difference]: With dead ends: 283 [2019-10-13 19:35:08,949 INFO L226 Difference]: Without dead ends: 175 [2019-10-13 19:35:08,951 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 [2019-10-13 19:35:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-13 19:35:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2019-10-13 19:35:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-13 19:35:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2019-10-13 19:35:09,035 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2019-10-13 19:35:09,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:09,035 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2019-10-13 19:35:09,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:35:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2019-10-13 19:35:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:35:09,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:09,050 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:09,050 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:09,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:09,051 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2019-10-13 19:35:09,051 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:09,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454335371] [2019-10-13 19:35:09,051 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:09,052 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:09,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,445 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:09,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454335371] [2019-10-13 19:35:09,534 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:09,534 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:09,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675357268] [2019-10-13 19:35:09,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:09,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:09,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:09,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:09,536 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2019-10-13 19:35:09,972 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:10,359 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:35:10,632 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:10,888 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:12,457 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2019-10-13 19:35:12,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:12,458 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-13 19:35:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:12,461 INFO L225 Difference]: With dead ends: 296 [2019-10-13 19:35:12,461 INFO L226 Difference]: Without dead ends: 175 [2019-10-13 19:35:12,462 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:35:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-13 19:35:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2019-10-13 19:35:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-13 19:35:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2019-10-13 19:35:12,498 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2019-10-13 19:35:12,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:12,499 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2019-10-13 19:35:12,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:12,499 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2019-10-13 19:35:12,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:35:12,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:12,501 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] [2019-10-13 19:35:12,501 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:12,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2019-10-13 19:35:12,502 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:12,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398826380] [2019-10-13 19:35:12,503 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:12,503 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:12,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,823 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:12,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398826380] [2019-10-13 19:35:12,939 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:12,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:35:12,940 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558613725] [2019-10-13 19:35:12,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:35:12,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:12,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:35:12,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:35:12,941 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2019-10-13 19:35:13,378 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:14,609 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:15,501 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2019-10-13 19:35:15,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:15,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-13 19:35:15,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:15,505 INFO L225 Difference]: With dead ends: 404 [2019-10-13 19:35:15,505 INFO L226 Difference]: Without dead ends: 283 [2019-10-13 19:35:15,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:15,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-10-13 19:35:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2019-10-13 19:35:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2019-10-13 19:35:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2019-10-13 19:35:15,571 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2019-10-13 19:35:15,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:15,572 INFO L462 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2019-10-13 19:35:15,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:35:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2019-10-13 19:35:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:35:15,573 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:15,574 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] [2019-10-13 19:35:15,574 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:15,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:15,575 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2019-10-13 19:35:15,575 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:15,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562907950] [2019-10-13 19:35:15,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:15,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:15,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,926 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:16,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562907950] [2019-10-13 19:35:16,019 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:16,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:16,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29151164] [2019-10-13 19:35:16,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:16,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:16,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:16,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:16,021 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2019-10-13 19:35:16,660 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:17,797 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:18,179 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:18,820 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:19,075 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:19,413 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:20,724 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2019-10-13 19:35:20,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:20,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-13 19:35:20,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:20,729 INFO L225 Difference]: With dead ends: 718 [2019-10-13 19:35:20,729 INFO L226 Difference]: Without dead ends: 502 [2019-10-13 19:35:20,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2019-10-13 19:35:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2019-10-13 19:35:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-10-13 19:35:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2019-10-13 19:35:20,821 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2019-10-13 19:35:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:20,821 INFO L462 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2019-10-13 19:35:20,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2019-10-13 19:35:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:35:20,823 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:20,823 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] [2019-10-13 19:35:20,824 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2019-10-13 19:35:20,824 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:20,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616133227] [2019-10-13 19:35:20,825 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:20,825 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:20,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,163 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:21,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616133227] [2019-10-13 19:35:21,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:21,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:21,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57318696] [2019-10-13 19:35:21,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:21,295 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:21,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:21,295 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2019-10-13 19:35:21,782 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:23,111 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:23,419 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:24,609 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:24,924 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:25,201 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:25,612 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2019-10-13 19:35:25,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:35:25,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2019-10-13 19:35:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:25,620 INFO L225 Difference]: With dead ends: 544 [2019-10-13 19:35:25,620 INFO L226 Difference]: Without dead ends: 541 [2019-10-13 19:35:25,624 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:35:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-10-13 19:35:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2019-10-13 19:35:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-10-13 19:35:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2019-10-13 19:35:25,704 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2019-10-13 19:35:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:25,705 INFO L462 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2019-10-13 19:35:25,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2019-10-13 19:35:25,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:35:25,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:25,707 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] [2019-10-13 19:35:25,707 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:25,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2019-10-13 19:35:25,708 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:25,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573155651] [2019-10-13 19:35:25,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:25,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:25,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,007 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:26,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573155651] [2019-10-13 19:35:26,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:26,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:26,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775578201] [2019-10-13 19:35:26,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:26,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:26,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:26,155 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2019-10-13 19:35:27,481 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:27,756 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:35:28,037 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:28,311 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:29,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:29,692 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2019-10-13 19:35:29,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:29,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2019-10-13 19:35:29,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:29,696 INFO L225 Difference]: With dead ends: 960 [2019-10-13 19:35:29,697 INFO L226 Difference]: Without dead ends: 549 [2019-10-13 19:35:29,698 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2019-10-13 19:35:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2019-10-13 19:35:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-13 19:35:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2019-10-13 19:35:29,773 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2019-10-13 19:35:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:29,774 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2019-10-13 19:35:29,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2019-10-13 19:35:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:35:29,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:29,776 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] [2019-10-13 19:35:29,777 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:29,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:29,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2019-10-13 19:35:29,777 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:29,777 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748336923] [2019-10-13 19:35:29,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:29,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:29,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,091 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:30,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748336923] [2019-10-13 19:35:30,245 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:30,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:35:30,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006527402] [2019-10-13 19:35:30,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:35:30,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:30,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:35:30,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:30,247 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2019-10-13 19:35:31,222 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:31,497 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:31,776 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:32,584 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:32,864 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:33,134 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:34,749 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2019-10-13 19:35:34,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:34,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2019-10-13 19:35:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:34,754 INFO L225 Difference]: With dead ends: 980 [2019-10-13 19:35:34,754 INFO L226 Difference]: Without dead ends: 559 [2019-10-13 19:35:34,756 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 [2019-10-13 19:35:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2019-10-13 19:35:34,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2019-10-13 19:35:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2019-10-13 19:35:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2019-10-13 19:35:34,854 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2019-10-13 19:35:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:34,856 INFO L462 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2019-10-13 19:35:34,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:35:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2019-10-13 19:35:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:35:34,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:34,861 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] [2019-10-13 19:35:34,861 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:34,861 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2019-10-13 19:35:34,862 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:34,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522282761] [2019-10-13 19:35:34,862 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:34,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:34,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,198 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:35,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522282761] [2019-10-13 19:35:35,376 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:35,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:35:35,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638141896] [2019-10-13 19:35:35,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:35:35,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:35,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:35:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:35:35,379 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2019-10-13 19:35:36,050 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:36,615 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:39,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:39,269 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2019-10-13 19:35:39,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:35:39,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-10-13 19:35:39,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:39,274 INFO L225 Difference]: With dead ends: 1342 [2019-10-13 19:35:39,275 INFO L226 Difference]: Without dead ends: 913 [2019-10-13 19:35:39,276 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 [2019-10-13 19:35:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2019-10-13 19:35:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2019-10-13 19:35:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2019-10-13 19:35:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2019-10-13 19:35:39,409 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2019-10-13 19:35:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:39,409 INFO L462 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2019-10-13 19:35:39,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:35:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2019-10-13 19:35:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 19:35:39,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:39,412 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] [2019-10-13 19:35:39,412 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2019-10-13 19:35:39,413 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:39,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067327058] [2019-10-13 19:35:39,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:39,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:39,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,719 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:35:40,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067327058] [2019-10-13 19:35:40,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130735795] [2019-10-13 19:35:40,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:40,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:35:40,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:40,461 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:40,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-13 19:35:40,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360195489] [2019-10-13 19:35:40,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:40,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:40,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:40,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:40,463 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 8 states. [2019-10-13 19:35:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:41,184 INFO L93 Difference]: Finished difference Result 1526 states and 1799 transitions. [2019-10-13 19:35:41,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:41,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-10-13 19:35:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:41,192 INFO L225 Difference]: With dead ends: 1526 [2019-10-13 19:35:41,192 INFO L226 Difference]: Without dead ends: 757 [2019-10-13 19:35:41,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2019-10-13 19:35:41,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2019-10-13 19:35:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2019-10-13 19:35:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 872 transitions. [2019-10-13 19:35:41,373 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 872 transitions. Word has length 108 [2019-10-13 19:35:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:41,374 INFO L462 AbstractCegarLoop]: Abstraction has 757 states and 872 transitions. [2019-10-13 19:35:41,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 872 transitions. [2019-10-13 19:35:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 19:35:41,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:41,377 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] [2019-10-13 19:35:41,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:41,587 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:41,587 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2019-10-13 19:35:41,588 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:41,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554824496] [2019-10-13 19:35:41,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:41,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:41,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY