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_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:22,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:22,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:22,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:22,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:22,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:22,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:22,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:22,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:22,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:22,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:22,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:22,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:22,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:22,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:22,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:22,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:22,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:22,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:22,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:22,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:22,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:22,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:22,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:22,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:22,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:22,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:22,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:22,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:22,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:22,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:22,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:22,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:22,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:22,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:22,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:22,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:22,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:22,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:22,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:22,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:22,467 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 13:07:22,487 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:22,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:22,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:22,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:22,489 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:22,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:22,490 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:22,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:22,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:22,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:22,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:22,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:22,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:22,491 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:22,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:22,492 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:22,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:22,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:22,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:22,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:22,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:22,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:22,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:22,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:22,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:22,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:22,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:22,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:22,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:22,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:22,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:22,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:22,554 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:22,555 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:22,555 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2019-09-20 13:07:22,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22273239f/3cfff5ff620745ac82532d469fa5b936/FLAG03f458787 [2019-09-20 13:07:23,264 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:23,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2019-09-20 13:07:23,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22273239f/3cfff5ff620745ac82532d469fa5b936/FLAG03f458787 [2019-09-20 13:07:23,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22273239f/3cfff5ff620745ac82532d469fa5b936 [2019-09-20 13:07:23,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:23,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:23,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:23,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:23,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:23,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422b8279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23, skipping insertion in model container [2019-09-20 13:07:23,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,513 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:23,578 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:23,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:24,002 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:24,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:24,196 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:24,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24 WrapperNode [2019-09-20 13:07:24,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:24,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:24,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:24,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:24,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (1/1) ... [2019-09-20 13:07:24,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (1/1) ... [2019-09-20 13:07:24,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (1/1) ... [2019-09-20 13:07:24,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (1/1) ... [2019-09-20 13:07:24,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (1/1) ... [2019-09-20 13:07:24,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (1/1) ... [2019-09-20 13:07:24,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (1/1) ... [2019-09-20 13:07:24,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:24,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:24,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:24,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:24,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (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 13:07:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:07:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:07:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:24,392 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:24,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:24,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:07:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:07:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:25,416 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:25,417 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:25,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:25 BoogieIcfgContainer [2019-09-20 13:07:25,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:25,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:25,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:25,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:25,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:23" (1/3) ... [2019-09-20 13:07:25,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6e79bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:25, skipping insertion in model container [2019-09-20 13:07:25,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:24" (2/3) ... [2019-09-20 13:07:25,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6e79bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:25, skipping insertion in model container [2019-09-20 13:07:25,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:25" (3/3) ... [2019-09-20 13:07:25,428 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2019-09-20 13:07:25,439 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:25,449 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:25,467 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:25,513 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:25,514 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:25,514 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:25,514 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:25,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:25,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:25,515 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:25,515 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:25,515 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-09-20 13:07:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:25,554 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:25,555 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 13:07:25,557 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:25,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:25,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2019-09-20 13:07:25,566 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:25,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:25,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:25,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,884 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 13:07:25,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:25,891 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:25,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:25,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:25,909 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-09-20 13:07:25,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:25,955 INFO L93 Difference]: Finished difference Result 288 states and 355 transitions. [2019-09-20 13:07:25,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:25,957 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:25,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:25,971 INFO L225 Difference]: With dead ends: 288 [2019-09-20 13:07:25,972 INFO L226 Difference]: Without dead ends: 146 [2019-09-20 13:07:25,976 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 13:07:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-09-20 13:07:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-09-20 13:07:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-20 13:07:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2019-09-20 13:07:26,038 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2019-09-20 13:07:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:26,039 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2019-09-20 13:07:26,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2019-09-20 13:07:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:26,043 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:26,044 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 13:07:26,044 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:26,045 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2019-09-20 13:07:26,045 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:26,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:26,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:26,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:26,199 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 13:07:26,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:26,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:26,202 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:26,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:26,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:26,203 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 3 states. [2019-09-20 13:07:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:26,253 INFO L93 Difference]: Finished difference Result 227 states and 265 transitions. [2019-09-20 13:07:26,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:26,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:26,261 INFO L225 Difference]: With dead ends: 227 [2019-09-20 13:07:26,261 INFO L226 Difference]: Without dead ends: 137 [2019-09-20 13:07:26,263 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 13:07:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-09-20 13:07:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-09-20 13:07:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-09-20 13:07:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2019-09-20 13:07:26,287 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2019-09-20 13:07:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:26,287 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2019-09-20 13:07:26,288 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2019-09-20 13:07:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:07:26,290 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:26,290 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] [2019-09-20 13:07:26,291 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:26,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2019-09-20 13:07:26,291 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:26,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:26,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:26,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:26,445 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 13:07:26,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:26,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:26,446 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:26,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:26,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:26,447 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 7 states. [2019-09-20 13:07:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:26,971 INFO L93 Difference]: Finished difference Result 411 states and 497 transitions. [2019-09-20 13:07:26,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:26,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:07:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:26,976 INFO L225 Difference]: With dead ends: 411 [2019-09-20 13:07:26,976 INFO L226 Difference]: Without dead ends: 302 [2019-09-20 13:07:26,977 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 13:07:26,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2019-09-20 13:07:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 290. [2019-09-20 13:07:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-09-20 13:07:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2019-09-20 13:07:27,016 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2019-09-20 13:07:27,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:27,017 INFO L475 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2019-09-20 13:07:27,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2019-09-20 13:07:27,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:07:27,021 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:27,021 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 13:07:27,021 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:27,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:27,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2019-09-20 13:07:27,022 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:27,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:27,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:27,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:27,217 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 13:07:27,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:27,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:27,219 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:27,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:27,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:27,220 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 7 states. [2019-09-20 13:07:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:28,209 INFO L93 Difference]: Finished difference Result 736 states and 956 transitions. [2019-09-20 13:07:28,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:28,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:07:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:28,216 INFO L225 Difference]: With dead ends: 736 [2019-09-20 13:07:28,216 INFO L226 Difference]: Without dead ends: 474 [2019-09-20 13:07:28,219 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2019-09-20 13:07:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 420. [2019-09-20 13:07:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-09-20 13:07:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 505 transitions. [2019-09-20 13:07:28,297 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 505 transitions. Word has length 70 [2019-09-20 13:07:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:28,298 INFO L475 AbstractCegarLoop]: Abstraction has 420 states and 505 transitions. [2019-09-20 13:07:28,298 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 505 transitions. [2019-09-20 13:07:28,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:28,307 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:28,308 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] [2019-09-20 13:07:28,308 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:28,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:28,308 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2019-09-20 13:07:28,308 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:28,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:28,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:28,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:28,486 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 13:07:28,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:28,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:28,488 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:28,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:28,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:28,489 INFO L87 Difference]: Start difference. First operand 420 states and 505 transitions. Second operand 4 states. [2019-09-20 13:07:28,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:28,809 INFO L93 Difference]: Finished difference Result 1514 states and 1938 transitions. [2019-09-20 13:07:28,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:28,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-09-20 13:07:28,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:28,818 INFO L225 Difference]: With dead ends: 1514 [2019-09-20 13:07:28,818 INFO L226 Difference]: Without dead ends: 1122 [2019-09-20 13:07:28,821 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 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 13:07:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2019-09-20 13:07:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1096. [2019-09-20 13:07:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2019-09-20 13:07:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1371 transitions. [2019-09-20 13:07:28,903 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1371 transitions. Word has length 93 [2019-09-20 13:07:28,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:28,904 INFO L475 AbstractCegarLoop]: Abstraction has 1096 states and 1371 transitions. [2019-09-20 13:07:28,904 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:28,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1371 transitions. [2019-09-20 13:07:28,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:28,907 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:28,907 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] [2019-09-20 13:07:28,907 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:28,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2019-09-20 13:07:28,908 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:28,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:28,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:28,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:29,032 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 13:07:29,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:29,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:29,033 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:29,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:29,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:29,035 INFO L87 Difference]: Start difference. First operand 1096 states and 1371 transitions. Second operand 6 states. [2019-09-20 13:07:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:29,124 INFO L93 Difference]: Finished difference Result 2194 states and 2804 transitions. [2019-09-20 13:07:29,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:29,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-20 13:07:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:29,135 INFO L225 Difference]: With dead ends: 2194 [2019-09-20 13:07:29,135 INFO L226 Difference]: Without dead ends: 1126 [2019-09-20 13:07:29,140 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 13:07:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2019-09-20 13:07:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2019-09-20 13:07:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2019-09-20 13:07:29,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1403 transitions. [2019-09-20 13:07:29,266 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1403 transitions. Word has length 93 [2019-09-20 13:07:29,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:29,269 INFO L475 AbstractCegarLoop]: Abstraction has 1126 states and 1403 transitions. [2019-09-20 13:07:29,269 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1403 transitions. [2019-09-20 13:07:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:29,273 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:29,273 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] [2019-09-20 13:07:29,273 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:29,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:29,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2019-09-20 13:07:29,274 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:29,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:29,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:29,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:29,387 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 13:07:29,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:29,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:29,389 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:29,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:29,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:29,389 INFO L87 Difference]: Start difference. First operand 1126 states and 1403 transitions. Second operand 8 states. [2019-09-20 13:07:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:29,466 INFO L93 Difference]: Finished difference Result 2081 states and 2663 transitions. [2019-09-20 13:07:29,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:29,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-09-20 13:07:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:29,473 INFO L225 Difference]: With dead ends: 2081 [2019-09-20 13:07:29,474 INFO L226 Difference]: Without dead ends: 983 [2019-09-20 13:07:29,478 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 13:07:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2019-09-20 13:07:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 983. [2019-09-20 13:07:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2019-09-20 13:07:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1202 transitions. [2019-09-20 13:07:29,544 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1202 transitions. Word has length 93 [2019-09-20 13:07:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:29,544 INFO L475 AbstractCegarLoop]: Abstraction has 983 states and 1202 transitions. [2019-09-20 13:07:29,545 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1202 transitions. [2019-09-20 13:07:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:07:29,547 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:29,547 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] [2019-09-20 13:07:29,548 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:29,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2019-09-20 13:07:29,548 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:29,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:29,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:29,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:29,693 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 13:07:29,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:29,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:29,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:29,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:29,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:29,695 INFO L87 Difference]: Start difference. First operand 983 states and 1202 transitions. Second operand 9 states. [2019-09-20 13:07:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:31,024 INFO L93 Difference]: Finished difference Result 2686 states and 3444 transitions. [2019-09-20 13:07:31,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:31,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2019-09-20 13:07:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:31,053 INFO L225 Difference]: With dead ends: 2686 [2019-09-20 13:07:31,053 INFO L226 Difference]: Without dead ends: 1917 [2019-09-20 13:07:31,059 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:31,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2019-09-20 13:07:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1684. [2019-09-20 13:07:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2019-09-20 13:07:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2029 transitions. [2019-09-20 13:07:31,234 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2029 transitions. Word has length 97 [2019-09-20 13:07:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:31,236 INFO L475 AbstractCegarLoop]: Abstraction has 1684 states and 2029 transitions. [2019-09-20 13:07:31,236 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2029 transitions. [2019-09-20 13:07:31,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-20 13:07:31,245 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:31,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:31,246 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:31,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:31,247 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2019-09-20 13:07:31,247 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:31,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:31,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:31,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:07:31,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:31,518 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 13:07:31,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:31,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 15 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): Stream Closed [2019-09-20 13:07:32,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:32,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:32,058 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:32,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:32,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:32,059 INFO L87 Difference]: Start difference. First operand 1684 states and 2029 transitions. Second operand 16 states. [2019-09-20 13:07:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:33,695 INFO L93 Difference]: Finished difference Result 3879 states and 4874 transitions. [2019-09-20 13:07:33,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:33,696 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2019-09-20 13:07:33,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:33,712 INFO L225 Difference]: With dead ends: 3879 [2019-09-20 13:07:33,713 INFO L226 Difference]: Without dead ends: 2403 [2019-09-20 13:07:33,720 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 157 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 13:07:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2019-09-20 13:07:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2141. [2019-09-20 13:07:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2141 states. [2019-09-20 13:07:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2547 transitions. [2019-09-20 13:07:33,941 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2547 transitions. Word has length 157 [2019-09-20 13:07:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:33,942 INFO L475 AbstractCegarLoop]: Abstraction has 2141 states and 2547 transitions. [2019-09-20 13:07:33,942 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2547 transitions. [2019-09-20 13:07:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-09-20 13:07:33,953 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:33,953 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:33,954 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2019-09-20 13:07:33,954 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:33,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:33,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:33,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:33,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-09-20 13:07:34,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:34,192 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 13:07:34,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:34,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:34,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 199 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-09-20 13:07:34,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:34,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:07:34,787 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:07:34,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:07:34,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:34,790 INFO L87 Difference]: Start difference. First operand 2141 states and 2547 transitions. Second operand 19 states. [2019-09-20 13:07:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:42,504 INFO L93 Difference]: Finished difference Result 8475 states and 12179 transitions. [2019-09-20 13:07:42,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-20 13:07:42,505 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 273 [2019-09-20 13:07:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:42,551 INFO L225 Difference]: With dead ends: 8475 [2019-09-20 13:07:42,552 INFO L226 Difference]: Without dead ends: 6370 [2019-09-20 13:07:42,567 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=595, Invalid=3827, Unknown=0, NotChecked=0, Total=4422 [2019-09-20 13:07:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2019-09-20 13:07:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 4443. [2019-09-20 13:07:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4443 states. [2019-09-20 13:07:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 5099 transitions. [2019-09-20 13:07:43,054 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 5099 transitions. Word has length 273 [2019-09-20 13:07:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:43,055 INFO L475 AbstractCegarLoop]: Abstraction has 4443 states and 5099 transitions. [2019-09-20 13:07:43,055 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:07:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 5099 transitions. [2019-09-20 13:07:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-09-20 13:07:43,072 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:43,072 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:43,073 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:43,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash 728878335, now seen corresponding path program 1 times [2019-09-20 13:07:43,073 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:43,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:43,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:43,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 98 proven. 53 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-09-20 13:07:43,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:43,312 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 13:07:43,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:43,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:43,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 238 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-20 13:07:43,816 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:43,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:43,819 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:43,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:43,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:43,820 INFO L87 Difference]: Start difference. First operand 4443 states and 5099 transitions. Second operand 20 states. [2019-09-20 13:07:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:45,522 INFO L93 Difference]: Finished difference Result 8456 states and 9768 transitions. [2019-09-20 13:07:45,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:45,522 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 293 [2019-09-20 13:07:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:45,558 INFO L225 Difference]: With dead ends: 8456 [2019-09-20 13:07:45,558 INFO L226 Difference]: Without dead ends: 4459 [2019-09-20 13:07:45,571 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2019-09-20 13:07:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 4447. [2019-09-20 13:07:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4447 states. [2019-09-20 13:07:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 5093 transitions. [2019-09-20 13:07:45,875 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 5093 transitions. Word has length 293 [2019-09-20 13:07:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:45,878 INFO L475 AbstractCegarLoop]: Abstraction has 4447 states and 5093 transitions. [2019-09-20 13:07:45,879 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 5093 transitions. [2019-09-20 13:07:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-09-20 13:07:45,903 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:45,904 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:45,904 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:45,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1292112448, now seen corresponding path program 1 times [2019-09-20 13:07:45,905 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:45,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:45,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:45,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2019-09-20 13:07:46,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:46,209 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 13:07:46,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:07:46,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 166 proven. 16 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:46,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:46,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:07:46,708 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:07:46,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:07:46,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:07:46,709 INFO L87 Difference]: Start difference. First operand 4447 states and 5093 transitions. Second operand 14 states. [2019-09-20 13:07:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:49,966 INFO L93 Difference]: Finished difference Result 10015 states and 12602 transitions. [2019-09-20 13:07:49,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:07:49,966 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 294 [2019-09-20 13:07:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:50,019 INFO L225 Difference]: With dead ends: 10015 [2019-09-20 13:07:50,019 INFO L226 Difference]: Without dead ends: 7356 [2019-09-20 13:07:50,032 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:07:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7356 states. [2019-09-20 13:07:50,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7356 to 5525. [2019-09-20 13:07:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5525 states. [2019-09-20 13:07:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 6328 transitions. [2019-09-20 13:07:50,384 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 6328 transitions. Word has length 294 [2019-09-20 13:07:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:50,385 INFO L475 AbstractCegarLoop]: Abstraction has 5525 states and 6328 transitions. [2019-09-20 13:07:50,386 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:07:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 6328 transitions. [2019-09-20 13:07:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2019-09-20 13:07:50,406 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:50,407 INFO L407 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2019-09-20 13:07:50,407 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1298738169, now seen corresponding path program 1 times [2019-09-20 13:07:50,408 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:50,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:50,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:50,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2019-09-20 13:07:50,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:50,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:50,642 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:50,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:50,643 INFO L87 Difference]: Start difference. First operand 5525 states and 6328 transitions. Second operand 4 states. [2019-09-20 13:07:51,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:51,077 INFO L93 Difference]: Finished difference Result 9026 states and 10371 transitions. [2019-09-20 13:07:51,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:51,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 406 [2019-09-20 13:07:51,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:51,094 INFO L225 Difference]: With dead ends: 9026 [2019-09-20 13:07:51,094 INFO L226 Difference]: Without dead ends: 3587 [2019-09-20 13:07:51,110 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 13:07:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2019-09-20 13:07:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3497. [2019-09-20 13:07:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3497 states. [2019-09-20 13:07:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 3937 transitions. [2019-09-20 13:07:51,335 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 3937 transitions. Word has length 406 [2019-09-20 13:07:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:51,336 INFO L475 AbstractCegarLoop]: Abstraction has 3497 states and 3937 transitions. [2019-09-20 13:07:51,336 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 3937 transitions. [2019-09-20 13:07:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2019-09-20 13:07:51,351 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:51,352 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:51,352 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:51,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:51,353 INFO L82 PathProgramCache]: Analyzing trace with hash 108812737, now seen corresponding path program 1 times [2019-09-20 13:07:51,353 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:51,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:51,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:51,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:51,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 152 proven. 8 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-09-20 13:07:51,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:51,719 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 13:07:51,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:51,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-20 13:07:51,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 193 proven. 46 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:52,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:52,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2019-09-20 13:07:52,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-20 13:07:52,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-20 13:07:52,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-09-20 13:07:52,178 INFO L87 Difference]: Start difference. First operand 3497 states and 3937 transitions. Second operand 18 states.