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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:40,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:40,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:40,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:40,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:40,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:40,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:40,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:40,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:40,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:40,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:40,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:40,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:40,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:40,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:40,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:40,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:40,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:40,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:40,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:40,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:40,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:40,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:40,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:40,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:40,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:40,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:40,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:40,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:40,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:40,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:40,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:40,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:40,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:40,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:40,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:40,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:40,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:40,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:40,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:40,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:40,525 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 13:07:40,540 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:40,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:40,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:40,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:40,542 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:40,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:40,542 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:40,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:40,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:40,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:40,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:40,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:40,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:40,544 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:40,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:40,544 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:40,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:40,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:40,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:40,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:40,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:40,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:40,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:40,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:40,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:40,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:40,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:40,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:40,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:40,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:40,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:40,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:40,593 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:40,594 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:40,594 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-09-20 13:07:40,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3182575c5/3a97021d48b94da9a4215ac9e40059ff/FLAGe39778844 [2019-09-20 13:07:41,245 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:41,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-09-20 13:07:41,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3182575c5/3a97021d48b94da9a4215ac9e40059ff/FLAGe39778844 [2019-09-20 13:07:41,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3182575c5/3a97021d48b94da9a4215ac9e40059ff [2019-09-20 13:07:41,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:41,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:41,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:41,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:41,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:41,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:41" (1/1) ... [2019-09-20 13:07:41,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f3530e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:41, skipping insertion in model container [2019-09-20 13:07:41,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:41" (1/1) ... [2019-09-20 13:07:41,573 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:41,635 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:42,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:42,179 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:42,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:42,379 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:42,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42 WrapperNode [2019-09-20 13:07:42,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:42,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:42,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:42,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:42,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (1/1) ... [2019-09-20 13:07:42,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:42,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:42,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:42,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:42,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (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 13:07:42,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:42,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:07:42,598 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:07:42,598 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:07:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:42,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:42,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:42,606 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:42,606 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:07:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:07:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:07:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:42,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:42,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:42,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:43,698 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:43,699 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:43,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:43 BoogieIcfgContainer [2019-09-20 13:07:43,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:43,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:43,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:43,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:43,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:41" (1/3) ... [2019-09-20 13:07:43,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaa0553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:43, skipping insertion in model container [2019-09-20 13:07:43,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:42" (2/3) ... [2019-09-20 13:07:43,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaa0553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:43, skipping insertion in model container [2019-09-20 13:07:43,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:43" (3/3) ... [2019-09-20 13:07:43,712 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2019-09-20 13:07:43,722 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:43,736 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:43,753 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:43,790 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:43,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:43,791 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:43,791 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:43,791 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:43,791 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:43,792 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:43,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:43,792 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2019-09-20 13:07:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:43,825 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:43,827 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 13:07:43,829 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:43,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash -878720759, now seen corresponding path program 1 times [2019-09-20 13:07:43,838 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:43,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:43,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:43,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:44,231 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 13:07:44,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:44,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:44,244 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:44,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:44,271 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 2 states. [2019-09-20 13:07:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:44,320 INFO L93 Difference]: Finished difference Result 284 states and 353 transitions. [2019-09-20 13:07:44,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:44,321 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:44,335 INFO L225 Difference]: With dead ends: 284 [2019-09-20 13:07:44,335 INFO L226 Difference]: Without dead ends: 144 [2019-09-20 13:07:44,341 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 13:07:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-20 13:07:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-09-20 13:07:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-20 13:07:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2019-09-20 13:07:44,400 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 59 [2019-09-20 13:07:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:44,400 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2019-09-20 13:07:44,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2019-09-20 13:07:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:44,405 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:44,405 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 13:07:44,406 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1980606616, now seen corresponding path program 1 times [2019-09-20 13:07:44,406 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:44,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:44,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:44,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:44,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:44,566 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 13:07:44,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:44,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:44,569 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:44,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:44,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:44,571 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 3 states. [2019-09-20 13:07:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:44,604 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2019-09-20 13:07:44,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:44,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:44,608 INFO L225 Difference]: With dead ends: 227 [2019-09-20 13:07:44,608 INFO L226 Difference]: Without dead ends: 135 [2019-09-20 13:07:44,610 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 13:07:44,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-09-20 13:07:44,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2019-09-20 13:07:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-09-20 13:07:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2019-09-20 13:07:44,625 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 60 [2019-09-20 13:07:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:44,626 INFO L475 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2019-09-20 13:07:44,626 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2019-09-20 13:07:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:07:44,629 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:44,629 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:44,629 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:44,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:44,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1839911150, now seen corresponding path program 1 times [2019-09-20 13:07:44,630 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:44,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:44,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:44,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:44,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:44,844 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 13:07:44,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:44,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:44,845 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:44,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:44,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:44,846 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand 7 states. [2019-09-20 13:07:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:45,418 INFO L93 Difference]: Finished difference Result 405 states and 492 transitions. [2019-09-20 13:07:45,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:45,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:07:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:45,431 INFO L225 Difference]: With dead ends: 405 [2019-09-20 13:07:45,431 INFO L226 Difference]: Without dead ends: 298 [2019-09-20 13:07:45,435 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 13:07:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2019-09-20 13:07:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 290. [2019-09-20 13:07:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-09-20 13:07:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 352 transitions. [2019-09-20 13:07:45,509 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 352 transitions. Word has length 64 [2019-09-20 13:07:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:45,509 INFO L475 AbstractCegarLoop]: Abstraction has 290 states and 352 transitions. [2019-09-20 13:07:45,509 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 352 transitions. [2019-09-20 13:07:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:07:45,518 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:45,519 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 13:07:45,519 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:45,522 INFO L82 PathProgramCache]: Analyzing trace with hash 423224560, now seen corresponding path program 1 times [2019-09-20 13:07:45,522 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:45,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:45,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:45,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:45,711 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 13:07:45,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:45,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:45,712 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:45,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:45,713 INFO L87 Difference]: Start difference. First operand 290 states and 352 transitions. Second operand 7 states. [2019-09-20 13:07:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:46,448 INFO L93 Difference]: Finished difference Result 731 states and 954 transitions. [2019-09-20 13:07:46,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:46,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:07:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:46,454 INFO L225 Difference]: With dead ends: 731 [2019-09-20 13:07:46,454 INFO L226 Difference]: Without dead ends: 469 [2019-09-20 13:07:46,457 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 13:07:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2019-09-20 13:07:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 416. [2019-09-20 13:07:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-09-20 13:07:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 503 transitions. [2019-09-20 13:07:46,520 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 503 transitions. Word has length 70 [2019-09-20 13:07:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:46,521 INFO L475 AbstractCegarLoop]: Abstraction has 416 states and 503 transitions. [2019-09-20 13:07:46,521 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:46,521 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 503 transitions. [2019-09-20 13:07:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:46,527 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:46,527 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] [2019-09-20 13:07:46,529 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:46,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:46,529 INFO L82 PathProgramCache]: Analyzing trace with hash -742421187, now seen corresponding path program 1 times [2019-09-20 13:07:46,529 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:46,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:46,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,650 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 13:07:46,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:46,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:46,652 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:46,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:46,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:46,652 INFO L87 Difference]: Start difference. First operand 416 states and 503 transitions. Second operand 6 states. [2019-09-20 13:07:46,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:46,709 INFO L93 Difference]: Finished difference Result 814 states and 1003 transitions. [2019-09-20 13:07:46,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:46,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2019-09-20 13:07:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:46,714 INFO L225 Difference]: With dead ends: 814 [2019-09-20 13:07:46,714 INFO L226 Difference]: Without dead ends: 426 [2019-09-20 13:07:46,716 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 13:07:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-09-20 13:07:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2019-09-20 13:07:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-09-20 13:07:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 513 transitions. [2019-09-20 13:07:46,799 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 513 transitions. Word has length 92 [2019-09-20 13:07:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:46,799 INFO L475 AbstractCegarLoop]: Abstraction has 426 states and 513 transitions. [2019-09-20 13:07:46,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 513 transitions. [2019-09-20 13:07:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:46,801 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:46,801 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] [2019-09-20 13:07:46,802 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash -40821313, now seen corresponding path program 1 times [2019-09-20 13:07:46,802 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:46,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:46,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,884 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 13:07:46,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:46,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:46,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:46,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:46,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:46,886 INFO L87 Difference]: Start difference. First operand 426 states and 513 transitions. Second operand 8 states. [2019-09-20 13:07:46,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:46,928 INFO L93 Difference]: Finished difference Result 838 states and 1042 transitions. [2019-09-20 13:07:46,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:46,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-09-20 13:07:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:46,936 INFO L225 Difference]: With dead ends: 838 [2019-09-20 13:07:46,936 INFO L226 Difference]: Without dead ends: 440 [2019-09-20 13:07:46,938 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 13:07:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-09-20 13:07:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 434. [2019-09-20 13:07:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-09-20 13:07:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-09-20 13:07:46,972 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 92 [2019-09-20 13:07:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:46,974 INFO L475 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-09-20 13:07:46,974 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-09-20 13:07:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:46,979 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:46,980 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] [2019-09-20 13:07:46,980 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:46,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1684659584, now seen corresponding path program 1 times [2019-09-20 13:07:46,980 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:46,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:46,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:47,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:47,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:47,087 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:47,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:47,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:47,089 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 4 states. [2019-09-20 13:07:47,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:47,345 INFO L93 Difference]: Finished difference Result 1388 states and 1746 transitions. [2019-09-20 13:07:47,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:47,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-09-20 13:07:47,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:47,353 INFO L225 Difference]: With dead ends: 1388 [2019-09-20 13:07:47,353 INFO L226 Difference]: Without dead ends: 982 [2019-09-20 13:07:47,355 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 13:07:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2019-09-20 13:07:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 965. [2019-09-20 13:07:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-09-20 13:07:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1188 transitions. [2019-09-20 13:07:47,419 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1188 transitions. Word has length 92 [2019-09-20 13:07:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:47,419 INFO L475 AbstractCegarLoop]: Abstraction has 965 states and 1188 transitions. [2019-09-20 13:07:47,420 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1188 transitions. [2019-09-20 13:07:47,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-20 13:07:47,422 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:47,422 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] [2019-09-20 13:07:47,422 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:47,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1838654426, now seen corresponding path program 1 times [2019-09-20 13:07:47,423 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:47,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:47,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:47,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:47,618 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 13:07:47,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:47,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:47,619 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:47,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:47,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:47,623 INFO L87 Difference]: Start difference. First operand 965 states and 1188 transitions. Second operand 9 states. [2019-09-20 13:07:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:48,639 INFO L93 Difference]: Finished difference Result 2640 states and 3408 transitions. [2019-09-20 13:07:48,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:48,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-20 13:07:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:48,652 INFO L225 Difference]: With dead ends: 2640 [2019-09-20 13:07:48,652 INFO L226 Difference]: Without dead ends: 1885 [2019-09-20 13:07:48,656 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2019-09-20 13:07:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1660. [2019-09-20 13:07:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2019-09-20 13:07:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2011 transitions. [2019-09-20 13:07:48,786 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2011 transitions. Word has length 96 [2019-09-20 13:07:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:48,789 INFO L475 AbstractCegarLoop]: Abstraction has 1660 states and 2011 transitions. [2019-09-20 13:07:48,789 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2011 transitions. [2019-09-20 13:07:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-20 13:07:48,797 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:48,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:48,798 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:48,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:48,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1624055928, now seen corresponding path program 1 times [2019-09-20 13:07:48,798 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:48,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:48,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:48,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:48,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:07:49,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:49,135 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 13:07:49,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:49,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:49,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:07:49,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:49,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:49,567 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:49,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:49,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:49,568 INFO L87 Difference]: Start difference. First operand 1660 states and 2011 transitions. Second operand 16 states. [2019-09-20 13:07:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:50,960 INFO L93 Difference]: Finished difference Result 3791 states and 4798 transitions. [2019-09-20 13:07:50,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:50,961 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2019-09-20 13:07:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:50,976 INFO L225 Difference]: With dead ends: 3791 [2019-09-20 13:07:50,976 INFO L226 Difference]: Without dead ends: 2335 [2019-09-20 13:07:50,982 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 13:07:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2019-09-20 13:07:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2089. [2019-09-20 13:07:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2089 states. [2019-09-20 13:07:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2501 transitions. [2019-09-20 13:07:51,124 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2501 transitions. Word has length 157 [2019-09-20 13:07:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:51,125 INFO L475 AbstractCegarLoop]: Abstraction has 2089 states and 2501 transitions. [2019-09-20 13:07:51,125 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2501 transitions. [2019-09-20 13:07:51,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2019-09-20 13:07:51,133 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:51,134 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, 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 13:07:51,134 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:51,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:51,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1553804570, now seen corresponding path program 1 times [2019-09-20 13:07:51,134 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:51,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:51,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:51,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:51,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2019-09-20 13:07:51,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:51,318 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 13:07:51,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:51,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:51,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 201 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-20 13:07:51,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:51,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 16 [2019-09-20 13:07:51,937 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:51,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:51,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:51,939 INFO L87 Difference]: Start difference. First operand 2089 states and 2501 transitions. Second operand 16 states. [2019-09-20 13:07:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:54,899 INFO L93 Difference]: Finished difference Result 5445 states and 7517 transitions. [2019-09-20 13:07:54,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-20 13:07:54,900 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 277 [2019-09-20 13:07:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:54,923 INFO L225 Difference]: With dead ends: 5445 [2019-09-20 13:07:54,923 INFO L226 Difference]: Without dead ends: 3414 [2019-09-20 13:07:54,933 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2019-09-20 13:07:54,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2019-09-20 13:07:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 2446. [2019-09-20 13:07:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2019-09-20 13:07:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 2874 transitions. [2019-09-20 13:07:55,112 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 2874 transitions. Word has length 277 [2019-09-20 13:07:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:55,113 INFO L475 AbstractCegarLoop]: Abstraction has 2446 states and 2874 transitions. [2019-09-20 13:07:55,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 2874 transitions. [2019-09-20 13:07:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-09-20 13:07:55,125 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:55,126 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:55,126 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:55,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1672439298, now seen corresponding path program 1 times [2019-09-20 13:07:55,127 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:55,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:55,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:55,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:55,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 93 proven. 53 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2019-09-20 13:07:55,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:55,383 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 13:07:55,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:55,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:55,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 235 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-20 13:07:55,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:55,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:55,920 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:55,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:55,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:55,920 INFO L87 Difference]: Start difference. First operand 2446 states and 2874 transitions. Second operand 20 states. [2019-09-20 13:07:57,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:57,430 INFO L93 Difference]: Finished difference Result 4666 states and 5529 transitions. [2019-09-20 13:07:57,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:57,430 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 289 [2019-09-20 13:07:57,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:57,450 INFO L225 Difference]: With dead ends: 4666 [2019-09-20 13:07:57,450 INFO L226 Difference]: Without dead ends: 2454 [2019-09-20 13:07:57,460 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 292 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 13:07:57,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2019-09-20 13:07:57,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2448. [2019-09-20 13:07:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2448 states. [2019-09-20 13:07:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 2868 transitions. [2019-09-20 13:07:57,709 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 2868 transitions. Word has length 289 [2019-09-20 13:07:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:57,710 INFO L475 AbstractCegarLoop]: Abstraction has 2448 states and 2868 transitions. [2019-09-20 13:07:57,710 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:57,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 2868 transitions. [2019-09-20 13:07:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-09-20 13:07:57,723 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:57,724 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:57,724 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:57,724 INFO L82 PathProgramCache]: Analyzing trace with hash 581061215, now seen corresponding path program 1 times [2019-09-20 13:07:57,725 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:57,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:57,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:57,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:57,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 91 proven. 44 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-09-20 13:07:58,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:58,016 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 13:07:58,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:58,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:07:58,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-09-20 13:07:58,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:58,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:07:58,453 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:07:58,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:07:58,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:07:58,454 INFO L87 Difference]: Start difference. First operand 2448 states and 2868 transitions. Second operand 14 states. [2019-09-20 13:08:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:01,001 INFO L93 Difference]: Finished difference Result 5547 states and 7120 transitions. [2019-09-20 13:08:01,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:01,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 290 [2019-09-20 13:08:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:01,030 INFO L225 Difference]: With dead ends: 5547 [2019-09-20 13:08:01,031 INFO L226 Difference]: Without dead ends: 4069 [2019-09-20 13:08:01,039 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2019-09-20 13:08:01,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 3013. [2019-09-20 13:08:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2019-09-20 13:08:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3529 transitions. [2019-09-20 13:08:01,270 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3529 transitions. Word has length 290 [2019-09-20 13:08:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:01,272 INFO L475 AbstractCegarLoop]: Abstraction has 3013 states and 3529 transitions. [2019-09-20 13:08:01,273 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3529 transitions. [2019-09-20 13:08:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2019-09-20 13:08:01,291 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:01,291 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:01,292 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:01,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:01,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1934412742, now seen corresponding path program 1 times [2019-09-20 13:08:01,293 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:01,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:01,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:01,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:01,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2019-09-20 13:08:01,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:01,451 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:01,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:01,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-20 13:08:01,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2019-09-20 13:08:01,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:01,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-20 13:08:01,784 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:01,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:01,785 INFO L87 Difference]: Start difference. First operand 3013 states and 3529 transitions. Second operand 4 states. [2019-09-20 13:08:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:01,989 INFO L93 Difference]: Finished difference Result 3566 states and 4196 transitions. [2019-09-20 13:08:01,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:01,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 364 [2019-09-20 13:08:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:01,996 INFO L225 Difference]: With dead ends: 3566 [2019-09-20 13:08:01,997 INFO L226 Difference]: Without dead ends: 1251 [2019-09-20 13:08:02,003 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2019-09-20 13:08:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1225. [2019-09-20 13:08:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2019-09-20 13:08:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1392 transitions. [2019-09-20 13:08:02,071 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1392 transitions. Word has length 364 [2019-09-20 13:08:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:02,072 INFO L475 AbstractCegarLoop]: Abstraction has 1225 states and 1392 transitions. [2019-09-20 13:08:02,072 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1392 transitions. [2019-09-20 13:08:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2019-09-20 13:08:02,080 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:02,080 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:08:02,081 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1470688312, now seen corresponding path program 1 times [2019-09-20 13:08:02,081 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:02,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:02,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:02,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 146 proven. 57 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2019-09-20 13:08:02,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:02,518 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:02,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:02,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:02,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:03,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 352 proven. 16 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2019-09-20 13:08:03,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:03,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2019-09-20 13:08:03,321 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-20 13:08:03,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-20 13:08:03,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-09-20 13:08:03,323 INFO L87 Difference]: Start difference. First operand 1225 states and 1392 transitions. Second operand 23 states. [2019-09-20 13:08:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:08,798 INFO L93 Difference]: Finished difference Result 3397 states and 3996 transitions. [2019-09-20 13:08:08,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-20 13:08:08,798 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 358 [2019-09-20 13:08:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:08,810 INFO L225 Difference]: With dead ends: 3397 [2019-09-20 13:08:08,811 INFO L226 Difference]: Without dead ends: 2190 [2019-09-20 13:08:08,816 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 373 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=631, Invalid=3925, Unknown=0, NotChecked=0, Total=4556 [2019-09-20 13:08:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2019-09-20 13:08:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1934. [2019-09-20 13:08:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2019-09-20 13:08:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2205 transitions. [2019-09-20 13:08:08,923 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2205 transitions. Word has length 358 [2019-09-20 13:08:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:08,924 INFO L475 AbstractCegarLoop]: Abstraction has 1934 states and 2205 transitions. [2019-09-20 13:08:08,924 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-20 13:08:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2205 transitions. [2019-09-20 13:08:08,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2019-09-20 13:08:08,936 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:08,936 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, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:08,937 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:08,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1563962358, now seen corresponding path program 1 times [2019-09-20 13:08:08,937 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:08,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:08,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:08,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:08,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 138 proven. 28 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2019-09-20 13:08:09,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:09,154 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:09,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:09,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-20 13:08:09,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 368 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:09,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:09,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2019-09-20 13:08:09,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:08:09,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:08:09,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:09,754 INFO L87 Difference]: Start difference. First operand 1934 states and 2205 transitions. Second operand 13 states. [2019-09-20 13:08:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:09,823 INFO L93 Difference]: Finished difference Result 2184 states and 2480 transitions. [2019-09-20 13:08:09,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:08:09,823 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 430 [2019-09-20 13:08:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:09,824 INFO L225 Difference]: With dead ends: 2184 [2019-09-20 13:08:09,825 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:08:09,835 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:08:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:08:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:08:09,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:08:09,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 430 [2019-09-20 13:08:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:09,836 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:08:09,836 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:08:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:08:09,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:08:09,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:08:11,045 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 85 [2019-09-20 13:08:11,595 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 91 [2019-09-20 13:08:11,945 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 28 [2019-09-20 13:08:12,274 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 29 [2019-09-20 13:08:12,447 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2019-09-20 13:08:12,632 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24