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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:08:16,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:08:16,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:08:16,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:08:16,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:08:16,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:08:16,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:08:16,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:08:16,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:08:16,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:08:16,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:08:16,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:08:16,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:08:16,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:08:16,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:08:16,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:08:16,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:08:16,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:08:16,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:08:16,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:08:16,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:08:16,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:08:16,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:08:16,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:08:16,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:08:16,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:08:16,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:08:16,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:08:16,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:08:16,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:08:16,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:08:16,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:08:16,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:08:16,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:08:16,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:08:16,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:08:16,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:08:16,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:08:16,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:08:16,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:08:16,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:08:16,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:08:16,583 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:08:16,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:08:16,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:08:16,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:08:16,586 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:08:16,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:08:16,587 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:08:16,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:08:16,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:08:16,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:08:16,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:08:16,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:08:16,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:08:16,589 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:08:16,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:08:16,590 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:08:16,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:08:16,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:08:16,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:08:16,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:08:16,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:08:16,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:08:16,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:08:16,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:08:16,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:08:16,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:08:16,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:08:16,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:08:16,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:08:16,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:08:16,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:08:16,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:08:16,678 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:08:16,678 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:08:16,679 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-09-20 13:08:16,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a732632e3/6a92889085f64923ae3feb15a78cac81/FLAG2cab130fb [2019-09-20 13:08:17,292 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:08:17,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-09-20 13:08:17,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a732632e3/6a92889085f64923ae3feb15a78cac81/FLAG2cab130fb [2019-09-20 13:08:17,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a732632e3/6a92889085f64923ae3feb15a78cac81 [2019-09-20 13:08:17,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:08:17,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:08:17,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:17,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:08:17,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:08:17,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741914c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:17, skipping insertion in model container [2019-09-20 13:08:17,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:17" (1/1) ... [2019-09-20 13:08:17,638 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:08:17,698 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:08:18,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:18,173 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:08:18,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:18,350 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:08:18,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18 WrapperNode [2019-09-20 13:08:18,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:18,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:08:18,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:08:18,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:08:18,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (1/1) ... [2019-09-20 13:08:18,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (1/1) ... [2019-09-20 13:08:18,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (1/1) ... [2019-09-20 13:08:18,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (1/1) ... [2019-09-20 13:08:18,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (1/1) ... [2019-09-20 13:08:18,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (1/1) ... [2019-09-20 13:08:18,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (1/1) ... [2019-09-20 13:08:18,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:08:18,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:08:18,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:08:18,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:08:18,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:08:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:08:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:08:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:08:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:08:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:08:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:08:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:08:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:08:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:08:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:08:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:08:18,517 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:08:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:08:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:08:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:08:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:08:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:08:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:08:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:08:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:08:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:18,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:08:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:08:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:08:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:08:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:08:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2019-09-20 13:08:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2019-09-20 13:08:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2019-09-20 13:08:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2019-09-20 13:08:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2019-09-20 13:08:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2019-09-20 13:08:18,521 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:08:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2019-09-20 13:08:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2019-09-20 13:08:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:08:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:08:18,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:08:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:08:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:08:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:08:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:08:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:08:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:08:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:08:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:08:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:08:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:08:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:08:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:08:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:08:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:08:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:08:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:08:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:08:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:08:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:08:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:08:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:08:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:08:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:08:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:08:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:08:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:08:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:08:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:08:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:08:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:08:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:08:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:08:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:08:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:08:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:08:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:08:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:08:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:08:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:08:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:08:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:08:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:08:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:08:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:08:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:08:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:08:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:08:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:08:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2019-09-20 13:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2019-09-20 13:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2019-09-20 13:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2019-09-20 13:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2019-09-20 13:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2019-09-20 13:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2019-09-20 13:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2019-09-20 13:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:08:19,807 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:08:19,808 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:08:19,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:19 BoogieIcfgContainer [2019-09-20 13:08:19,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:08:19,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:08:19,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:08:19,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:08:19,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:08:17" (1/3) ... [2019-09-20 13:08:19,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c85fe72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:19, skipping insertion in model container [2019-09-20 13:08:19,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:18" (2/3) ... [2019-09-20 13:08:19,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c85fe72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:19, skipping insertion in model container [2019-09-20 13:08:19,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:19" (3/3) ... [2019-09-20 13:08:19,823 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.c [2019-09-20 13:08:19,833 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:08:19,844 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:08:19,860 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:08:19,907 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:08:19,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:08:19,908 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:08:19,908 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:08:19,908 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:08:19,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:08:19,908 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:08:19,909 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:08:19,909 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:08:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2019-09-20 13:08:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-20 13:08:19,945 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,946 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 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] [2019-09-20 13:08:19,949 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1762673243, now seen corresponding path program 1 times [2019-09-20 13:08:19,957 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:20,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:20,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-20 13:08:20,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:20,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:08:20,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:08:20,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:08:20,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:20,474 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 2 states. [2019-09-20 13:08:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:20,531 INFO L93 Difference]: Finished difference Result 403 states and 509 transitions. [2019-09-20 13:08:20,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:08:20,533 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 91 [2019-09-20 13:08:20,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:20,552 INFO L225 Difference]: With dead ends: 403 [2019-09-20 13:08:20,553 INFO L226 Difference]: Without dead ends: 212 [2019-09-20 13:08:20,563 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2019-09-20 13:08:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2019-09-20 13:08:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-09-20 13:08:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 259 transitions. [2019-09-20 13:08:20,628 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 259 transitions. Word has length 91 [2019-09-20 13:08:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:20,630 INFO L475 AbstractCegarLoop]: Abstraction has 212 states and 259 transitions. [2019-09-20 13:08:20,630 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:08:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 259 transitions. [2019-09-20 13:08:20,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:08:20,637 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:20,637 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 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] [2019-09-20 13:08:20,638 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:20,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:20,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1489086657, now seen corresponding path program 1 times [2019-09-20 13:08:20,638 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:20,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:20,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:20,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-20 13:08:20,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:20,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:20,806 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:20,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:20,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:20,808 INFO L87 Difference]: Start difference. First operand 212 states and 259 transitions. Second operand 3 states. [2019-09-20 13:08:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:20,853 INFO L93 Difference]: Finished difference Result 340 states and 415 transitions. [2019-09-20 13:08:20,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:20,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2019-09-20 13:08:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:20,857 INFO L225 Difference]: With dead ends: 340 [2019-09-20 13:08:20,857 INFO L226 Difference]: Without dead ends: 203 [2019-09-20 13:08:20,860 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-09-20 13:08:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2019-09-20 13:08:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2019-09-20 13:08:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2019-09-20 13:08:20,882 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 92 [2019-09-20 13:08:20,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:20,882 INFO L475 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2019-09-20 13:08:20,882 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:20,883 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2019-09-20 13:08:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:08:20,887 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:20,887 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 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] [2019-09-20 13:08:20,887 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:20,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2081754782, now seen corresponding path program 1 times [2019-09-20 13:08:20,888 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:20,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:20,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:20,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-20 13:08:21,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:21,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:21,096 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:21,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:21,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:21,097 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand 9 states. [2019-09-20 13:08:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:22,406 INFO L93 Difference]: Finished difference Result 577 states and 721 transitions. [2019-09-20 13:08:22,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:08:22,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2019-09-20 13:08:22,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:22,411 INFO L225 Difference]: With dead ends: 577 [2019-09-20 13:08:22,412 INFO L226 Difference]: Without dead ends: 419 [2019-09-20 13:08:22,413 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2019-09-20 13:08:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 407. [2019-09-20 13:08:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2019-09-20 13:08:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 508 transitions. [2019-09-20 13:08:22,484 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 508 transitions. Word has length 97 [2019-09-20 13:08:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:22,485 INFO L475 AbstractCegarLoop]: Abstraction has 407 states and 508 transitions. [2019-09-20 13:08:22,485 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 508 transitions. [2019-09-20 13:08:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:08:22,499 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:22,500 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 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] [2019-09-20 13:08:22,500 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:22,500 INFO L82 PathProgramCache]: Analyzing trace with hash -995246095, now seen corresponding path program 1 times [2019-09-20 13:08:22,501 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:22,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:22,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:22,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:22,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-09-20 13:08:22,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:22,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:22,744 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:22,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:22,745 INFO L87 Difference]: Start difference. First operand 407 states and 508 transitions. Second operand 7 states. [2019-09-20 13:08:23,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:23,757 INFO L93 Difference]: Finished difference Result 1053 states and 1420 transitions. [2019-09-20 13:08:23,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:08:23,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2019-09-20 13:08:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:23,771 INFO L225 Difference]: With dead ends: 1053 [2019-09-20 13:08:23,771 INFO L226 Difference]: Without dead ends: 691 [2019-09-20 13:08:23,774 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-09-20 13:08:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 631. [2019-09-20 13:08:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-20 13:08:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 799 transitions. [2019-09-20 13:08:23,872 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 799 transitions. Word has length 103 [2019-09-20 13:08:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:23,874 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 799 transitions. [2019-09-20 13:08:23,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 799 transitions. [2019-09-20 13:08:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-20 13:08:23,885 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:23,885 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:23,886 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:23,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2077668553, now seen corresponding path program 1 times [2019-09-20 13:08:23,886 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:23,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:23,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:23,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:23,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-20 13:08:24,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:24,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:24,065 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:24,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:24,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:24,066 INFO L87 Difference]: Start difference. First operand 631 states and 799 transitions. Second operand 9 states. [2019-09-20 13:08:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:24,434 INFO L93 Difference]: Finished difference Result 1231 states and 1640 transitions. [2019-09-20 13:08:24,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:08:24,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 136 [2019-09-20 13:08:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:24,440 INFO L225 Difference]: With dead ends: 1231 [2019-09-20 13:08:24,440 INFO L226 Difference]: Without dead ends: 645 [2019-09-20 13:08:24,443 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:08:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-09-20 13:08:24,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 639. [2019-09-20 13:08:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-09-20 13:08:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 807 transitions. [2019-09-20 13:08:24,490 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 807 transitions. Word has length 136 [2019-09-20 13:08:24,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:24,491 INFO L475 AbstractCegarLoop]: Abstraction has 639 states and 807 transitions. [2019-09-20 13:08:24,491 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 807 transitions. [2019-09-20 13:08:24,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-20 13:08:24,494 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:24,494 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:24,494 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:24,495 INFO L82 PathProgramCache]: Analyzing trace with hash -232301387, now seen corresponding path program 1 times [2019-09-20 13:08:24,495 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:24,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:24,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-20 13:08:24,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:24,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:08:24,596 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:08:24,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:08:24,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:08:24,597 INFO L87 Difference]: Start difference. First operand 639 states and 807 transitions. Second operand 6 states. [2019-09-20 13:08:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:24,655 INFO L93 Difference]: Finished difference Result 1247 states and 1656 transitions. [2019-09-20 13:08:24,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:24,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-09-20 13:08:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:24,661 INFO L225 Difference]: With dead ends: 1247 [2019-09-20 13:08:24,661 INFO L226 Difference]: Without dead ends: 653 [2019-09-20 13:08:24,664 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2019-09-20 13:08:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 649. [2019-09-20 13:08:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-09-20 13:08:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 817 transitions. [2019-09-20 13:08:24,708 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 817 transitions. Word has length 136 [2019-09-20 13:08:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:24,709 INFO L475 AbstractCegarLoop]: Abstraction has 649 states and 817 transitions. [2019-09-20 13:08:24,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:08:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 817 transitions. [2019-09-20 13:08:24,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-20 13:08:24,712 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:24,712 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:24,713 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:24,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:24,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1768602104, now seen corresponding path program 1 times [2019-09-20 13:08:24,713 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:24,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:24,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-20 13:08:24,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:24,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:24,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:24,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:24,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:24,812 INFO L87 Difference]: Start difference. First operand 649 states and 817 transitions. Second operand 4 states. [2019-09-20 13:08:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:25,241 INFO L93 Difference]: Finished difference Result 1985 states and 2644 transitions. [2019-09-20 13:08:25,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:25,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2019-09-20 13:08:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:25,250 INFO L225 Difference]: With dead ends: 1985 [2019-09-20 13:08:25,251 INFO L226 Difference]: Without dead ends: 1381 [2019-09-20 13:08:25,253 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 13:08:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2019-09-20 13:08:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1364. [2019-09-20 13:08:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2019-09-20 13:08:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1788 transitions. [2019-09-20 13:08:25,352 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1788 transitions. Word has length 136 [2019-09-20 13:08:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:25,352 INFO L475 AbstractCegarLoop]: Abstraction has 1364 states and 1788 transitions. [2019-09-20 13:08:25,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1788 transitions. [2019-09-20 13:08:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-20 13:08:25,356 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:25,357 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:25,357 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:25,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:25,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2097761874, now seen corresponding path program 1 times [2019-09-20 13:08:25,360 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:25,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:25,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:25,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:25,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-20 13:08:25,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:25,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:25,582 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:25,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:25,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:25,584 INFO L87 Difference]: Start difference. First operand 1364 states and 1788 transitions. Second operand 9 states. [2019-09-20 13:08:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:27,102 INFO L93 Difference]: Finished difference Result 3741 states and 5115 transitions. [2019-09-20 13:08:27,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:27,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2019-09-20 13:08:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:27,119 INFO L225 Difference]: With dead ends: 3741 [2019-09-20 13:08:27,119 INFO L226 Difference]: Without dead ends: 2654 [2019-09-20 13:08:27,124 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2019-09-20 13:08:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2575. [2019-09-20 13:08:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2019-09-20 13:08:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3322 transitions. [2019-09-20 13:08:27,299 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3322 transitions. Word has length 140 [2019-09-20 13:08:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:27,300 INFO L475 AbstractCegarLoop]: Abstraction has 2575 states and 3322 transitions. [2019-09-20 13:08:27,300 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3322 transitions. [2019-09-20 13:08:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-09-20 13:08:27,304 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:27,305 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:27,305 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:27,305 INFO L82 PathProgramCache]: Analyzing trace with hash 314895610, now seen corresponding path program 1 times [2019-09-20 13:08:27,306 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:27,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:27,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:27,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:27,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-20 13:08:27,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:27,399 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:27,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:27,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-20 13:08:27,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-20 13:08:27,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:27,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-20 13:08:27,766 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:27,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:27,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:27,768 INFO L87 Difference]: Start difference. First operand 2575 states and 3322 transitions. Second operand 4 states. [2019-09-20 13:08:28,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:28,253 INFO L93 Difference]: Finished difference Result 5634 states and 7555 transitions. [2019-09-20 13:08:28,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:28,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2019-09-20 13:08:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:28,275 INFO L225 Difference]: With dead ends: 5634 [2019-09-20 13:08:28,276 INFO L226 Difference]: Without dead ends: 2717 [2019-09-20 13:08:28,286 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 192 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 13:08:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2019-09-20 13:08:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2457. [2019-09-20 13:08:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2019-09-20 13:08:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3112 transitions. [2019-09-20 13:08:28,479 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3112 transitions. Word has length 191 [2019-09-20 13:08:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:28,481 INFO L475 AbstractCegarLoop]: Abstraction has 2457 states and 3112 transitions. [2019-09-20 13:08:28,481 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3112 transitions. [2019-09-20 13:08:28,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-09-20 13:08:28,491 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:28,491 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:28,491 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:28,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:28,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1226816066, now seen corresponding path program 1 times [2019-09-20 13:08:28,492 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:28,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:28,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:28,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:28,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-09-20 13:08:28,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:28,784 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:28,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:29,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:08:29,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-09-20 13:08:29,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:29,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2019-09-20 13:08:29,330 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-20 13:08:29,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-20 13:08:29,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-09-20 13:08:29,333 INFO L87 Difference]: Start difference. First operand 2457 states and 3112 transitions. Second operand 17 states. [2019-09-20 13:08:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:32,189 INFO L93 Difference]: Finished difference Result 5240 states and 6835 transitions. [2019-09-20 13:08:32,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-20 13:08:32,190 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 196 [2019-09-20 13:08:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:32,215 INFO L225 Difference]: With dead ends: 5240 [2019-09-20 13:08:32,216 INFO L226 Difference]: Without dead ends: 3194 [2019-09-20 13:08:32,226 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2019-09-20 13:08:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2019-09-20 13:08:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2850. [2019-09-20 13:08:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2850 states. [2019-09-20 13:08:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3478 transitions. [2019-09-20 13:08:32,516 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3478 transitions. Word has length 196 [2019-09-20 13:08:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:32,517 INFO L475 AbstractCegarLoop]: Abstraction has 2850 states and 3478 transitions. [2019-09-20 13:08:32,517 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-20 13:08:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3478 transitions. [2019-09-20 13:08:32,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2019-09-20 13:08:32,530 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:32,531 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:32,531 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:32,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash -106182460, now seen corresponding path program 1 times [2019-09-20 13:08:32,532 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:32,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:32,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:32,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:32,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 82 proven. 16 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2019-09-20 13:08:32,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:32,701 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:32,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:32,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-20 13:08:32,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-09-20 13:08:33,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:33,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-20 13:08:33,065 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:33,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:33,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:33,066 INFO L87 Difference]: Start difference. First operand 2850 states and 3478 transitions. Second operand 4 states. [2019-09-20 13:08:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:33,665 INFO L93 Difference]: Finished difference Result 8170 states and 10248 transitions. [2019-09-20 13:08:33,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:33,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2019-09-20 13:08:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:33,707 INFO L225 Difference]: With dead ends: 8170 [2019-09-20 13:08:33,708 INFO L226 Difference]: Without dead ends: 5453 [2019-09-20 13:08:33,724 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 328 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 13:08:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2019-09-20 13:08:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 5450. [2019-09-20 13:08:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5450 states. [2019-09-20 13:08:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 6609 transitions. [2019-09-20 13:08:34,148 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 6609 transitions. Word has length 327 [2019-09-20 13:08:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:34,149 INFO L475 AbstractCegarLoop]: Abstraction has 5450 states and 6609 transitions. [2019-09-20 13:08:34,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 6609 transitions. [2019-09-20 13:08:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2019-09-20 13:08:34,170 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:34,171 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:34,171 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:34,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1414536368, now seen corresponding path program 1 times [2019-09-20 13:08:34,172 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:34,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:34,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:34,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:34,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2019-09-20 13:08:34,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:34,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:34,341 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:34,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:34,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:34,342 INFO L87 Difference]: Start difference. First operand 5450 states and 6609 transitions. Second operand 3 states. [2019-09-20 13:08:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:34,632 INFO L93 Difference]: Finished difference Result 8490 states and 10291 transitions. [2019-09-20 13:08:34,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:34,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 365 [2019-09-20 13:08:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:34,652 INFO L225 Difference]: With dead ends: 8490 [2019-09-20 13:08:34,653 INFO L226 Difference]: Without dead ends: 3263 [2019-09-20 13:08:34,666 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2019-09-20 13:08:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3206. [2019-09-20 13:08:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3206 states. [2019-09-20 13:08:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3206 states to 3206 states and 3821 transitions. [2019-09-20 13:08:34,852 INFO L78 Accepts]: Start accepts. Automaton has 3206 states and 3821 transitions. Word has length 365 [2019-09-20 13:08:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:34,853 INFO L475 AbstractCegarLoop]: Abstraction has 3206 states and 3821 transitions. [2019-09-20 13:08:34,853 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3206 states and 3821 transitions. [2019-09-20 13:08:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-09-20 13:08:34,866 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:34,867 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:34,867 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:34,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1019122224, now seen corresponding path program 1 times [2019-09-20 13:08:34,868 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:34,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:34,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:34,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:34,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 84 proven. 24 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2019-09-20 13:08:35,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:35,037 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:35,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:35,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-20 13:08:35,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-09-20 13:08:35,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:35,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-20 13:08:35,440 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:35,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:35,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:35,441 INFO L87 Difference]: Start difference. First operand 3206 states and 3821 transitions. Second operand 4 states. [2019-09-20 13:08:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:36,026 INFO L93 Difference]: Finished difference Result 8810 states and 10761 transitions. [2019-09-20 13:08:36,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:36,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2019-09-20 13:08:36,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:36,081 INFO L225 Difference]: With dead ends: 8810 [2019-09-20 13:08:36,082 INFO L226 Difference]: Without dead ends: 5827 [2019-09-20 13:08:36,099 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 334 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 13:08:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2019-09-20 13:08:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5643. [2019-09-20 13:08:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5643 states. [2019-09-20 13:08:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5643 states to 5643 states and 6668 transitions. [2019-09-20 13:08:36,501 INFO L78 Accepts]: Start accepts. Automaton has 5643 states and 6668 transitions. Word has length 333 [2019-09-20 13:08:36,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:36,502 INFO L475 AbstractCegarLoop]: Abstraction has 5643 states and 6668 transitions. [2019-09-20 13:08:36,502 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5643 states and 6668 transitions. [2019-09-20 13:08:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2019-09-20 13:08:36,522 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:36,523 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:36,523 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:36,523 INFO L82 PathProgramCache]: Analyzing trace with hash 164255637, now seen corresponding path program 1 times [2019-09-20 13:08:36,523 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:36,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:36,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:36,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:36,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 79 proven. 4 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2019-09-20 13:08:36,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:36,780 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 13:08:36,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:37,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:37,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 239 proven. 4 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-09-20 13:08:37,625 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:37,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:08:37,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:08:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:08:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:37,630 INFO L87 Difference]: Start difference. First operand 5643 states and 6668 transitions. Second operand 19 states.