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_spec5_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:08:12,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:08:12,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:08:12,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:08:12,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:08:12,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:08:12,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:08:12,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:08:12,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:08:12,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:08:12,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:08:12,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:08:12,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:08:12,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:08:12,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:08:12,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:08:12,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:08:12,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:08:12,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:08:12,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:08:12,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:08:12,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:08:12,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:08:12,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:08:12,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:08:12,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:08:12,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:08:12,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:08:12,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:08:12,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:08:12,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:08:12,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:08:12,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:08:12,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:08:12,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:08:12,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:08:12,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:08:12,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:08:12,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:08:12,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:08:12,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:08:12,579 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 [2019-09-20 13:08:12,593 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:08:12,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:08:12,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:08:12,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:08:12,595 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:08:12,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:08:12,596 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:08:12,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:08:12,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:08:12,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:08:12,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:08:12,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:08:12,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:08:12,597 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:08:12,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:08:12,598 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:08:12,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:08:12,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:08:12,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:08:12,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:08:12,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:08:12,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:08:12,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:08:12,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:08:12,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:08:12,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:08:12,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:08:12,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:08:12,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:08:12,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:08:12,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:08:12,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:08:12,650 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:08:12,650 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:08:12,651 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-09-20 13:08:12,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64aa30e2d/06cacdeebce94ecd8cafcf976043f709/FLAG3e14ac160 [2019-09-20 13:08:13,226 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:08:13,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-09-20 13:08:13,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64aa30e2d/06cacdeebce94ecd8cafcf976043f709/FLAG3e14ac160 [2019-09-20 13:08:13,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64aa30e2d/06cacdeebce94ecd8cafcf976043f709 [2019-09-20 13:08:13,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:08:13,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:08:13,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:13,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:08:13,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:08:13,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:13" (1/1) ... [2019-09-20 13:08:13,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3143413b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:13, skipping insertion in model container [2019-09-20 13:08:13,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:13" (1/1) ... [2019-09-20 13:08:13,592 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:08:13,655 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:08:14,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:14,101 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:08:14,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:14,305 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:08:14,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14 WrapperNode [2019-09-20 13:08:14,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:14,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:08:14,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:08:14,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:08:14,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (1/1) ... [2019-09-20 13:08:14,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (1/1) ... [2019-09-20 13:08:14,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (1/1) ... [2019-09-20 13:08:14,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (1/1) ... [2019-09-20 13:08:14,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (1/1) ... [2019-09-20 13:08:14,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (1/1) ... [2019-09-20 13:08:14,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (1/1) ... [2019-09-20 13:08:14,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:08:14,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:08:14,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:08:14,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:08:14,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (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 [2019-09-20 13:08:14,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:08:14,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:08:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:08:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:08:14,482 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:08:14,482 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:08:14,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:08:14,482 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:08:14,482 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:08:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:08:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:08:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:08:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:08:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:08:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:08:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:08:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:08:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:08:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:08:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:08:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:08:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:08:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:08:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:08:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:08:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:08:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:08:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:08:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:08:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:08:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:08:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:08:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:08:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:08:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:08:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:08:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:08:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:08:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:08:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:08:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:08:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:08:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:08:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:08:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:08:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:08:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:08:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:08:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:08:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:08:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:08:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:08:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:08:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:08:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:08:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:08:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:08:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:08:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:08:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:08:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:08:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:08:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:08:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:08:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:08:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:08:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:08:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:08:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:08:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:08:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:08:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:08:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:08:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:08:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:08:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:08:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:08:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:08:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:08:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:08:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:08:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:08:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:08:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:08:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:08:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:08:15,697 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:08:15,698 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:08:15,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:15 BoogieIcfgContainer [2019-09-20 13:08:15,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:08:15,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:08:15,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:08:15,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:08:15,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:08:13" (1/3) ... [2019-09-20 13:08:15,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ceff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:15, skipping insertion in model container [2019-09-20 13:08:15,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:14" (2/3) ... [2019-09-20 13:08:15,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ceff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:15, skipping insertion in model container [2019-09-20 13:08:15,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:15" (3/3) ... [2019-09-20 13:08:15,712 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2019-09-20 13:08:15,723 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:08:15,734 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:08:15,753 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:08:15,802 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:08:15,803 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:08:15,803 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:08:15,803 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:08:15,804 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:08:15,805 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:08:15,805 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:08:15,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:08:15,805 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:08:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2019-09-20 13:08:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:08:15,857 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:15,858 INFO L407 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] [2019-09-20 13:08:15,862 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:15,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1893311162, now seen corresponding path program 1 times [2019-09-20 13:08:15,872 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:15,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:15,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:15,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:15,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:16,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:16,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:08:16,191 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:08:16,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:08:16,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:16,209 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 2 states. [2019-09-20 13:08:16,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:16,257 INFO L93 Difference]: Finished difference Result 334 states and 415 transitions. [2019-09-20 13:08:16,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:08:16,259 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:08:16,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:16,274 INFO L225 Difference]: With dead ends: 334 [2019-09-20 13:08:16,274 INFO L226 Difference]: Without dead ends: 169 [2019-09-20 13:08:16,280 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-09-20 13:08:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2019-09-20 13:08:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-09-20 13:08:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2019-09-20 13:08:16,338 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 59 [2019-09-20 13:08:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:16,339 INFO L475 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2019-09-20 13:08:16,339 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:08:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2019-09-20 13:08:16,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:08:16,343 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:16,344 INFO L407 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] [2019-09-20 13:08:16,344 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:16,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:16,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1978801715, now seen corresponding path program 1 times [2019-09-20 13:08:16,345 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:16,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:16,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:16,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:16,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:16,499 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:16,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:16,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:16,500 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand 3 states. [2019-09-20 13:08:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:16,553 INFO L93 Difference]: Finished difference Result 277 states and 329 transitions. [2019-09-20 13:08:16,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:16,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:08:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:16,560 INFO L225 Difference]: With dead ends: 277 [2019-09-20 13:08:16,560 INFO L226 Difference]: Without dead ends: 160 [2019-09-20 13:08:16,564 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-09-20 13:08:16,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2019-09-20 13:08:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-09-20 13:08:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2019-09-20 13:08:16,593 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 60 [2019-09-20 13:08:16,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:16,594 INFO L475 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2019-09-20 13:08:16,595 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2019-09-20 13:08:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:08:16,599 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:16,599 INFO L407 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] [2019-09-20 13:08:16,601 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:16,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:16,601 INFO L82 PathProgramCache]: Analyzing trace with hash -532508270, now seen corresponding path program 1 times [2019-09-20 13:08:16,601 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:16,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:16,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:16,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:16,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:16,826 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:16,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:16,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:16,827 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 7 states. [2019-09-20 13:08:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:17,461 INFO L93 Difference]: Finished difference Result 480 states and 585 transitions. [2019-09-20 13:08:17,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:08:17,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:08:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:17,472 INFO L225 Difference]: With dead ends: 480 [2019-09-20 13:08:17,473 INFO L226 Difference]: Without dead ends: 348 [2019-09-20 13:08:17,474 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:08:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-09-20 13:08:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2019-09-20 13:08:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2019-09-20 13:08:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 414 transitions. [2019-09-20 13:08:17,542 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 414 transitions. Word has length 64 [2019-09-20 13:08:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:17,542 INFO L475 AbstractCegarLoop]: Abstraction has 340 states and 414 transitions. [2019-09-20 13:08:17,543 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 414 transitions. [2019-09-20 13:08:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:08:17,546 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:17,546 INFO L407 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] [2019-09-20 13:08:17,546 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:17,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:17,547 INFO L82 PathProgramCache]: Analyzing trace with hash 216340368, now seen corresponding path program 1 times [2019-09-20 13:08:17,547 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:17,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:17,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:17,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:08:17,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:17,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:17,665 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:17,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:17,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:17,666 INFO L87 Difference]: Start difference. First operand 340 states and 414 transitions. Second operand 7 states. [2019-09-20 13:08:18,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:18,560 INFO L93 Difference]: Finished difference Result 867 states and 1120 transitions. [2019-09-20 13:08:18,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:08:18,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:08:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:18,565 INFO L225 Difference]: With dead ends: 867 [2019-09-20 13:08:18,566 INFO L226 Difference]: Without dead ends: 555 [2019-09-20 13:08:18,567 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-09-20 13:08:18,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 502. [2019-09-20 13:08:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2019-09-20 13:08:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 601 transitions. [2019-09-20 13:08:18,631 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 601 transitions. Word has length 70 [2019-09-20 13:08:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:18,632 INFO L475 AbstractCegarLoop]: Abstraction has 502 states and 601 transitions. [2019-09-20 13:08:18,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 601 transitions. [2019-09-20 13:08:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:08:18,640 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:18,641 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:18,641 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:18,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1357993179, now seen corresponding path program 1 times [2019-09-20 13:08:18,642 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:18,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:18,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:18,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:18,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:18,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:18,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:08:18,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:08:18,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:08:18,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:08:18,812 INFO L87 Difference]: Start difference. First operand 502 states and 601 transitions. Second operand 6 states. [2019-09-20 13:08:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:18,878 INFO L93 Difference]: Finished difference Result 990 states and 1226 transitions. [2019-09-20 13:08:18,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:18,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2019-09-20 13:08:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:18,886 INFO L225 Difference]: With dead ends: 990 [2019-09-20 13:08:18,886 INFO L226 Difference]: Without dead ends: 516 [2019-09-20 13:08:18,888 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:18,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2019-09-20 13:08:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 512. [2019-09-20 13:08:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-09-20 13:08:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 611 transitions. [2019-09-20 13:08:18,926 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 611 transitions. Word has length 112 [2019-09-20 13:08:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:18,927 INFO L475 AbstractCegarLoop]: Abstraction has 512 states and 611 transitions. [2019-09-20 13:08:18,927 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:08:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 611 transitions. [2019-09-20 13:08:18,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:08:18,929 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:18,930 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:18,930 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash 581168867, now seen corresponding path program 1 times [2019-09-20 13:08:18,931 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:18,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:18,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:18,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:18,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:19,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:19,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:08:19,087 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:08:19,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:08:19,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:19,088 INFO L87 Difference]: Start difference. First operand 512 states and 611 transitions. Second operand 8 states. [2019-09-20 13:08:19,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:19,147 INFO L93 Difference]: Finished difference Result 1010 states and 1246 transitions. [2019-09-20 13:08:19,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:08:19,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2019-09-20 13:08:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:19,152 INFO L225 Difference]: With dead ends: 1010 [2019-09-20 13:08:19,152 INFO L226 Difference]: Without dead ends: 526 [2019-09-20 13:08:19,154 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:19,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-09-20 13:08:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 520. [2019-09-20 13:08:19,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-09-20 13:08:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2019-09-20 13:08:19,192 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 112 [2019-09-20 13:08:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,195 INFO L475 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2019-09-20 13:08:19,195 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:08:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2019-09-20 13:08:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:08:19,198 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,198 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:19,199 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1350338882, now seen corresponding path program 1 times [2019-09-20 13:08:19,199 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:19,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:19,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:19,371 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:19,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:19,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:19,372 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 4 states. [2019-09-20 13:08:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:19,672 INFO L93 Difference]: Finished difference Result 1618 states and 2020 transitions. [2019-09-20 13:08:19,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:19,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-09-20 13:08:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:19,680 INFO L225 Difference]: With dead ends: 1618 [2019-09-20 13:08:19,680 INFO L226 Difference]: Without dead ends: 1126 [2019-09-20 13:08:19,682 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2019-09-20 13:08:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1109. [2019-09-20 13:08:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2019-09-20 13:08:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1360 transitions. [2019-09-20 13:08:19,756 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1360 transitions. Word has length 112 [2019-09-20 13:08:19,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,757 INFO L475 AbstractCegarLoop]: Abstraction has 1109 states and 1360 transitions. [2019-09-20 13:08:19,757 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1360 transitions. [2019-09-20 13:08:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-20 13:08:19,760 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,761 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:19,761 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1975342852, now seen corresponding path program 1 times [2019-09-20 13:08:19,762 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:19,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:19,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:19,934 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:19,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:19,937 INFO L87 Difference]: Start difference. First operand 1109 states and 1360 transitions. Second operand 9 states. [2019-09-20 13:08:21,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:21,293 INFO L93 Difference]: Finished difference Result 3024 states and 3876 transitions. [2019-09-20 13:08:21,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:21,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2019-09-20 13:08:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:21,309 INFO L225 Difference]: With dead ends: 3024 [2019-09-20 13:08:21,309 INFO L226 Difference]: Without dead ends: 2135 [2019-09-20 13:08:21,314 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2019-09-20 13:08:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 1904. [2019-09-20 13:08:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2019-09-20 13:08:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2295 transitions. [2019-09-20 13:08:21,473 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2295 transitions. Word has length 116 [2019-09-20 13:08:21,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:21,474 INFO L475 AbstractCegarLoop]: Abstraction has 1904 states and 2295 transitions. [2019-09-20 13:08:21,474 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2295 transitions. [2019-09-20 13:08:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-20 13:08:21,479 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:21,479 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 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, 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] [2019-09-20 13:08:21,480 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:21,480 INFO L82 PathProgramCache]: Analyzing trace with hash -283315442, now seen corresponding path program 1 times [2019-09-20 13:08:21,480 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:21,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:21,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:21,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:21,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-20 13:08:21,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:21,630 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:21,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:21,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:08:21,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 37 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:22,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:22,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:08:22,091 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:22,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:22,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:22,093 INFO L87 Difference]: Start difference. First operand 1904 states and 2295 transitions. Second operand 16 states. [2019-09-20 13:08:23,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:23,692 INFO L93 Difference]: Finished difference Result 4269 states and 5356 transitions. [2019-09-20 13:08:23,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:08:23,693 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2019-09-20 13:08:23,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:23,716 INFO L225 Difference]: With dead ends: 4269 [2019-09-20 13:08:23,717 INFO L226 Difference]: Without dead ends: 2579 [2019-09-20 13:08:23,724 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:08:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2019-09-20 13:08:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2333. [2019-09-20 13:08:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2019-09-20 13:08:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 2765 transitions. [2019-09-20 13:08:23,895 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 2765 transitions. Word has length 193 [2019-09-20 13:08:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:23,896 INFO L475 AbstractCegarLoop]: Abstraction has 2333 states and 2765 transitions. [2019-09-20 13:08:23,896 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 2765 transitions. [2019-09-20 13:08:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2019-09-20 13:08:23,972 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:23,973 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:23,973 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:23,974 INFO L82 PathProgramCache]: Analyzing trace with hash -892886269, now seen corresponding path program 1 times [2019-09-20 13:08:23,974 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:23,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:23,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:23,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:23,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 76 proven. 7 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2019-09-20 13:08:24,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:24,279 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:24,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:24,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 235 proven. 4 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:24,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:24,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:08:24,941 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:08:24,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:08:24,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:24,942 INFO L87 Difference]: Start difference. First operand 2333 states and 2765 transitions. Second operand 19 states. [2019-09-20 13:08:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:32,799 INFO L93 Difference]: Finished difference Result 9081 states and 12949 transitions. [2019-09-20 13:08:32,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-20 13:08:32,799 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 327 [2019-09-20 13:08:32,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:32,846 INFO L225 Difference]: With dead ends: 9081 [2019-09-20 13:08:32,847 INFO L226 Difference]: Without dead ends: 6784 [2019-09-20 13:08:32,863 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=679, Invalid=4577, Unknown=0, NotChecked=0, Total=5256 [2019-09-20 13:08:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6784 states. [2019-09-20 13:08:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6784 to 4891. [2019-09-20 13:08:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4891 states. [2019-09-20 13:08:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 5616 transitions. [2019-09-20 13:08:33,265 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 5616 transitions. Word has length 327 [2019-09-20 13:08:33,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:33,266 INFO L475 AbstractCegarLoop]: Abstraction has 4891 states and 5616 transitions. [2019-09-20 13:08:33,266 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:08:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 5616 transitions. [2019-09-20 13:08:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2019-09-20 13:08:33,286 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:33,286 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:33,287 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:33,288 INFO L82 PathProgramCache]: Analyzing trace with hash -690465919, now seen corresponding path program 1 times [2019-09-20 13:08:33,288 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:33,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:33,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:33,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:33,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 95 proven. 63 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-09-20 13:08:33,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:33,682 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:33,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:33,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 13:08:33,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 275 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-09-20 13:08:34,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:34,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:08:34,139 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:34,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:34,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:34,140 INFO L87 Difference]: Start difference. First operand 4891 states and 5616 transitions. Second operand 20 states. [2019-09-20 13:08:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:36,045 INFO L93 Difference]: Finished difference Result 9348 states and 10796 transitions. [2019-09-20 13:08:36,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:36,046 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 347 [2019-09-20 13:08:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:36,078 INFO L225 Difference]: With dead ends: 9348 [2019-09-20 13:08:36,079 INFO L226 Difference]: Without dead ends: 4907 [2019-09-20 13:08:36,091 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2019-09-20 13:08:36,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4895. [2019-09-20 13:08:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4895 states. [2019-09-20 13:08:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4895 states to 4895 states and 5610 transitions. [2019-09-20 13:08:36,376 INFO L78 Accepts]: Start accepts. Automaton has 4895 states and 5610 transitions. Word has length 347 [2019-09-20 13:08:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:36,376 INFO L475 AbstractCegarLoop]: Abstraction has 4895 states and 5610 transitions. [2019-09-20 13:08:36,377 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:36,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4895 states and 5610 transitions. [2019-09-20 13:08:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2019-09-20 13:08:36,394 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:36,394 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:36,394 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:36,395 INFO L82 PathProgramCache]: Analyzing trace with hash -994607345, now seen corresponding path program 1 times [2019-09-20 13:08:36,395 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:36,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:36,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:36,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:36,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2019-09-20 13:08:36,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:36,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-20 13:08:36,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:08:36,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:08:36,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:36,681 INFO L87 Difference]: Start difference. First operand 4895 states and 5610 transitions. Second operand 13 states. [2019-09-20 13:08:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:37,875 INFO L93 Difference]: Finished difference Result 9136 states and 10554 transitions. [2019-09-20 13:08:37,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:08:37,875 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 348 [2019-09-20 13:08:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:37,901 INFO L225 Difference]: With dead ends: 9136 [2019-09-20 13:08:37,902 INFO L226 Difference]: Without dead ends: 4691 [2019-09-20 13:08:37,916 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-09-20 13:08:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2019-09-20 13:08:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4647. [2019-09-20 13:08:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4647 states. [2019-09-20 13:08:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 5305 transitions. [2019-09-20 13:08:38,159 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 5305 transitions. Word has length 348 [2019-09-20 13:08:38,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:38,161 INFO L475 AbstractCegarLoop]: Abstraction has 4647 states and 5305 transitions. [2019-09-20 13:08:38,161 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:08:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 5305 transitions. [2019-09-20 13:08:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2019-09-20 13:08:38,184 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:38,184 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2019-09-20 13:08:38,184 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:38,185 INFO L82 PathProgramCache]: Analyzing trace with hash 221861097, now seen corresponding path program 1 times [2019-09-20 13:08:38,185 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:38,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:38,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:38,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:38,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 95 proven. 44 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-09-20 13:08:38,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:38,538 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:38,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:38,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:38,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 202 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-09-20 13:08:38,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:38,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:38,953 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:38,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:38,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:38,954 INFO L87 Difference]: Start difference. First operand 4647 states and 5305 transitions. Second operand 14 states. [2019-09-20 13:08:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:42,062 INFO L93 Difference]: Finished difference Result 10476 states and 13084 transitions. [2019-09-20 13:08:42,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:42,063 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 352 [2019-09-20 13:08:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:42,102 INFO L225 Difference]: With dead ends: 10476 [2019-09-20 13:08:42,102 INFO L226 Difference]: Without dead ends: 7701 [2019-09-20 13:08:42,115 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 371 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7701 states. [2019-09-20 13:08:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7701 to 5735. [2019-09-20 13:08:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5735 states. [2019-09-20 13:08:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5735 states to 5735 states and 6549 transitions. [2019-09-20 13:08:42,441 INFO L78 Accepts]: Start accepts. Automaton has 5735 states and 6549 transitions. Word has length 352 [2019-09-20 13:08:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:42,442 INFO L475 AbstractCegarLoop]: Abstraction has 5735 states and 6549 transitions. [2019-09-20 13:08:42,442 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5735 states and 6549 transitions. [2019-09-20 13:08:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2019-09-20 13:08:42,466 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:42,467 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:42,467 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:42,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:42,468 INFO L82 PathProgramCache]: Analyzing trace with hash -99696229, now seen corresponding path program 1 times [2019-09-20 13:08:42,468 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:42,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:42,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:42,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:42,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2019-09-20 13:08:42,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:42,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:42,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:42,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:42,754 INFO L87 Difference]: Start difference. First operand 5735 states and 6549 transitions. Second operand 4 states. [2019-09-20 13:08:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:43,056 INFO L93 Difference]: Finished difference Result 6838 states and 7852 transitions. [2019-09-20 13:08:43,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:43,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2019-09-20 13:08:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:43,065 INFO L225 Difference]: With dead ends: 6838 [2019-09-20 13:08:43,065 INFO L226 Difference]: Without dead ends: 2336 [2019-09-20 13:08:43,077 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2019-09-20 13:08:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2270. [2019-09-20 13:08:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2270 states. [2019-09-20 13:08:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 2511 transitions. [2019-09-20 13:08:43,192 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 2511 transitions. Word has length 431 [2019-09-20 13:08:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:43,193 INFO L475 AbstractCegarLoop]: Abstraction has 2270 states and 2511 transitions. [2019-09-20 13:08:43,193 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:43,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 2511 transitions. [2019-09-20 13:08:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2019-09-20 13:08:43,200 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:43,201 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:43,201 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:43,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:43,202 INFO L82 PathProgramCache]: Analyzing trace with hash 185827609, now seen corresponding path program 1 times [2019-09-20 13:08:43,202 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:43,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:43,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:43,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:43,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 115 proven. 76 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2019-09-20 13:08:43,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:43,519 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:43,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:43,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:43,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:43,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 399 proven. 26 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-09-20 13:08:44,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:44,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-09-20 13:08:44,059 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:08:44,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:08:44,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:08:44,060 INFO L87 Difference]: Start difference. First operand 2270 states and 2511 transitions. Second operand 15 states. [2019-09-20 13:08:46,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:46,668 INFO L93 Difference]: Finished difference Result 6189 states and 7203 transitions. [2019-09-20 13:08:46,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-20 13:08:46,669 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 425 [2019-09-20 13:08:46,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:46,683 INFO L225 Difference]: With dead ends: 6189 [2019-09-20 13:08:46,683 INFO L226 Difference]: Without dead ends: 4084 [2019-09-20 13:08:46,690 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 426 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2019-09-20 13:08:46,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2019-09-20 13:08:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 3339. [2019-09-20 13:08:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3339 states. [2019-09-20 13:08:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 3695 transitions. [2019-09-20 13:08:46,906 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 3695 transitions. Word has length 425 [2019-09-20 13:08:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:46,908 INFO L475 AbstractCegarLoop]: Abstraction has 3339 states and 3695 transitions. [2019-09-20 13:08:46,908 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-20 13:08:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 3695 transitions. [2019-09-20 13:08:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2019-09-20 13:08:46,923 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:46,923 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:46,924 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash -836196709, now seen corresponding path program 1 times [2019-09-20 13:08:46,924 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:46,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:46,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:46,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:46,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat