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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:22,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:22,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:22,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:22,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:22,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:22,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:22,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:22,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:22,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:22,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:22,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:22,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:22,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:22,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:22,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:22,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:22,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:22,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:22,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:22,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:22,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:22,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:22,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:22,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:22,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:22,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:22,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:22,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:22,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:22,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:22,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:22,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:22,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:22,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:22,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:22,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:22,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:22,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:22,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:22,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:22,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:30:22,548 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:22,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:22,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:22,549 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:22,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:22,550 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:22,550 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:22,550 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:22,550 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:22,551 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:22,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:22,551 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:22,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:22,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:22,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:22,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:22,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:22,553 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:22,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:22,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:22,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:22,554 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:22,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:22,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:22,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:22,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:22,555 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:22,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:22,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:22,555 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:22,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:22,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:22,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:22,601 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:22,602 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:22,602 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2019-09-20 13:30:22,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1f4a857/0fa5bd5b068845fca601aa2b10f84250/FLAGe21253c2c [2019-09-20 13:30:23,248 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:23,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2019-09-20 13:30:23,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1f4a857/0fa5bd5b068845fca601aa2b10f84250/FLAGe21253c2c [2019-09-20 13:30:23,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1f4a857/0fa5bd5b068845fca601aa2b10f84250 [2019-09-20 13:30:23,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:23,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:23,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:23,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:23,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:23,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:23" (1/1) ... [2019-09-20 13:30:23,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d65d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:23, skipping insertion in model container [2019-09-20 13:30:23,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:23" (1/1) ... [2019-09-20 13:30:23,550 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:23,609 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:24,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:24,148 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:24,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:24,354 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:24,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24 WrapperNode [2019-09-20 13:30:24,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:24,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:24,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:24,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:24,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:24,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:24,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:24,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:24,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:25,859 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:25,860 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:25,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:25 BoogieIcfgContainer [2019-09-20 13:30:25,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:25,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:25,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:25,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:25,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:23" (1/3) ... [2019-09-20 13:30:25,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2517e617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:25, skipping insertion in model container [2019-09-20 13:30:25,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24" (2/3) ... [2019-09-20 13:30:25,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2517e617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:25, skipping insertion in model container [2019-09-20 13:30:25,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:25" (3/3) ... [2019-09-20 13:30:25,870 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2019-09-20 13:30:25,880 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:25,889 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:25,907 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:25,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:25,935 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:25,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:25,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:25,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:25,936 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:25,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:25,936 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2019-09-20 13:30:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:25,972 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:25,973 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:25,976 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:25,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1299073538, now seen corresponding path program 1 times [2019-09-20 13:30:25,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,051 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:26,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:26,431 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:26,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:26,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:26,474 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2019-09-20 13:30:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,530 INFO L93 Difference]: Finished difference Result 166 states and 197 transitions. [2019-09-20 13:30:26,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:26,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:30:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,551 INFO L225 Difference]: With dead ends: 166 [2019-09-20 13:30:26,551 INFO L226 Difference]: Without dead ends: 155 [2019-09-20 13:30:26,556 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 13:30:26,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-09-20 13:30:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2019-09-20 13:30:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-09-20 13:30:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2019-09-20 13:30:26,643 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 51 [2019-09-20 13:30:26,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:26,644 INFO L475 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2019-09-20 13:30:26,645 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2019-09-20 13:30:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:26,656 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,657 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:26,657 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,658 INFO L82 PathProgramCache]: Analyzing trace with hash -155172335, now seen corresponding path program 1 times [2019-09-20 13:30:26,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,662 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:26,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:26,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:26,811 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:26,813 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:26,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:26,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:26,814 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 3 states. [2019-09-20 13:30:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:26,844 INFO L93 Difference]: Finished difference Result 146 states and 173 transitions. [2019-09-20 13:30:26,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:26,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:30:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:26,852 INFO L225 Difference]: With dead ends: 146 [2019-09-20 13:30:26,853 INFO L226 Difference]: Without dead ends: 146 [2019-09-20 13:30:26,854 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 13:30:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-09-20 13:30:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-09-20 13:30:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-20 13:30:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2019-09-20 13:30:26,878 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2019-09-20 13:30:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:26,879 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2019-09-20 13:30:26,879 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2019-09-20 13:30:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-20 13:30:26,881 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,881 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:26,882 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1504957008, now seen corresponding path program 1 times [2019-09-20 13:30:26,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:26,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:26,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:26,887 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:27,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:27,037 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:27,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:27,038 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 7 states. [2019-09-20 13:30:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,404 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2019-09-20 13:30:27,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:27,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-09-20 13:30:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,406 INFO L225 Difference]: With dead ends: 146 [2019-09-20 13:30:27,407 INFO L226 Difference]: Without dead ends: 146 [2019-09-20 13:30:27,407 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-09-20 13:30:27,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-09-20 13:30:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-20 13:30:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2019-09-20 13:30:27,419 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 56 [2019-09-20 13:30:27,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,420 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2019-09-20 13:30:27,420 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:27,420 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2019-09-20 13:30:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-20 13:30:27,421 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,422 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:27,422 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,423 INFO L82 PathProgramCache]: Analyzing trace with hash -775636071, now seen corresponding path program 1 times [2019-09-20 13:30:27,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,426 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:27,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:27,585 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:27,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:27,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:27,586 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 5 states. [2019-09-20 13:30:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,237 INFO L93 Difference]: Finished difference Result 257 states and 298 transitions. [2019-09-20 13:30:28,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:28,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2019-09-20 13:30:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,245 INFO L225 Difference]: With dead ends: 257 [2019-09-20 13:30:28,245 INFO L226 Difference]: Without dead ends: 257 [2019-09-20 13:30:28,245 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-09-20 13:30:28,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 239. [2019-09-20 13:30:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2019-09-20 13:30:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions. [2019-09-20 13:30:28,292 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 74 [2019-09-20 13:30:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,292 INFO L475 AbstractCegarLoop]: Abstraction has 239 states and 274 transitions. [2019-09-20 13:30:28,292 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions. [2019-09-20 13:30:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-20 13:30:28,294 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:28,294 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:28,297 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:28,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2094752105, now seen corresponding path program 1 times [2019-09-20 13:30:28,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:28,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:28,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,302 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:28,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:28,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:28,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,449 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:28,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:28,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:28,450 INFO L87 Difference]: Start difference. First operand 239 states and 274 transitions. Second operand 6 states. [2019-09-20 13:30:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,674 INFO L93 Difference]: Finished difference Result 432 states and 495 transitions. [2019-09-20 13:30:28,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:28,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2019-09-20 13:30:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,680 INFO L225 Difference]: With dead ends: 432 [2019-09-20 13:30:28,680 INFO L226 Difference]: Without dead ends: 432 [2019-09-20 13:30:28,681 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:28,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2019-09-20 13:30:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2019-09-20 13:30:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-09-20 13:30:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 488 transitions. [2019-09-20 13:30:28,720 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 488 transitions. Word has length 88 [2019-09-20 13:30:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,721 INFO L475 AbstractCegarLoop]: Abstraction has 426 states and 488 transitions. [2019-09-20 13:30:28,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 488 transitions. [2019-09-20 13:30:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:30:28,726 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:28,726 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:28,726 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:28,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1169136517, now seen corresponding path program 1 times [2019-09-20 13:30:28,727 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:28,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:28,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,732 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:28,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:28,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:28,908 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,908 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:28,909 INFO L87 Difference]: Start difference. First operand 426 states and 488 transitions. Second operand 7 states. [2019-09-20 13:30:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,640 INFO L93 Difference]: Finished difference Result 455 states and 533 transitions. [2019-09-20 13:30:29,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:30:29,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2019-09-20 13:30:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,644 INFO L225 Difference]: With dead ends: 455 [2019-09-20 13:30:29,644 INFO L226 Difference]: Without dead ends: 455 [2019-09-20 13:30:29,646 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:30:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2019-09-20 13:30:29,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 425. [2019-09-20 13:30:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2019-09-20 13:30:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 485 transitions. [2019-09-20 13:30:29,692 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 485 transitions. Word has length 92 [2019-09-20 13:30:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:29,693 INFO L475 AbstractCegarLoop]: Abstraction has 425 states and 485 transitions. [2019-09-20 13:30:29,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 485 transitions. [2019-09-20 13:30:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:30:29,695 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:29,695 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:29,695 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:29,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1253770304, now seen corresponding path program 1 times [2019-09-20 13:30:29,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:29,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:29,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,699 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:29,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:29,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:29,774 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:29,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:29,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:29,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:29,775 INFO L87 Difference]: Start difference. First operand 425 states and 485 transitions. Second operand 6 states. [2019-09-20 13:30:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,806 INFO L93 Difference]: Finished difference Result 439 states and 499 transitions. [2019-09-20 13:30:29,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:29,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-20 13:30:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,810 INFO L225 Difference]: With dead ends: 439 [2019-09-20 13:30:29,810 INFO L226 Difference]: Without dead ends: 439 [2019-09-20 13:30:29,811 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 13:30:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-09-20 13:30:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 435. [2019-09-20 13:30:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-09-20 13:30:29,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 495 transitions. [2019-09-20 13:30:29,851 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 495 transitions. Word has length 108 [2019-09-20 13:30:29,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:29,851 INFO L475 AbstractCegarLoop]: Abstraction has 435 states and 495 transitions. [2019-09-20 13:30:29,852 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:29,852 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 495 transitions. [2019-09-20 13:30:29,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:30:29,854 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:29,854 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:29,855 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash 685391742, now seen corresponding path program 1 times [2019-09-20 13:30:29,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:29,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:29,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,859 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:30,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:30,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:30:30,043 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,044 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:30:30,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:30:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:30,045 INFO L87 Difference]: Start difference. First operand 435 states and 495 transitions. Second operand 8 states. [2019-09-20 13:30:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,122 INFO L93 Difference]: Finished difference Result 449 states and 509 transitions. [2019-09-20 13:30:30,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:30,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-09-20 13:30:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,126 INFO L225 Difference]: With dead ends: 449 [2019-09-20 13:30:30,126 INFO L226 Difference]: Without dead ends: 449 [2019-09-20 13:30:30,126 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-09-20 13:30:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2019-09-20 13:30:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-09-20 13:30:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions. [2019-09-20 13:30:30,145 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 108 [2019-09-20 13:30:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,145 INFO L475 AbstractCegarLoop]: Abstraction has 443 states and 503 transitions. [2019-09-20 13:30:30,146 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:30:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions. [2019-09-20 13:30:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:30:30,148 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,148 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:30,148 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1454561757, now seen corresponding path program 1 times [2019-09-20 13:30:30,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,152 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:30,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:30,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:30:30,262 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:30:30,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:30:30,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:30,263 INFO L87 Difference]: Start difference. First operand 443 states and 503 transitions. Second operand 4 states. [2019-09-20 13:30:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,505 INFO L93 Difference]: Finished difference Result 891 states and 1057 transitions. [2019-09-20 13:30:30,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:30:30,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-09-20 13:30:30,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,512 INFO L225 Difference]: With dead ends: 891 [2019-09-20 13:30:30,512 INFO L226 Difference]: Without dead ends: 891 [2019-09-20 13:30:30,513 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2019-09-20 13:30:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 876. [2019-09-20 13:30:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2019-09-20 13:30:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1025 transitions. [2019-09-20 13:30:30,554 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1025 transitions. Word has length 108 [2019-09-20 13:30:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,554 INFO L475 AbstractCegarLoop]: Abstraction has 876 states and 1025 transitions. [2019-09-20 13:30:30,554 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:30:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1025 transitions. [2019-09-20 13:30:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:30:30,557 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,557 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:30,558 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1438503063, now seen corresponding path program 1 times [2019-09-20 13:30:30,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,561 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:30,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:30,701 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:30,702 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-20 13:30:30,705 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [161], [164], [169], [172], [187], [188], [191], [193], [196], [198], [201], [204], [216], [217], [227], [229], [234], [237], [240], [242], [247], [249], [250], [251], [252], [258], [262], [302], [305], [307], [310], [320], [323], [327], [328], [331], [332], [347], [350], [351], [352], [376], [378], [379], [446], [447], [452], [454], [457], [465], [466], [467], [468], [469], [470], [471], [472], [473], [513], [514], [515], [516], [517], [518], [519], [523], [524], [525], [526], [527], [529], [530], [531], [532], [533], [534], [537], [538], [539], [545], [546], [547], [548], [559], [560], [563], [564], [565], [567], [568], [573], [574], [575] [2019-09-20 13:30:30,760 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:30,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:30,872 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:30,874 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 71 root evaluator evaluations with a maximum evaluation depth of 0. Performed 71 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:30:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,879 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:30,960 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:30,960 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:30,964 INFO L420 sIntCurrentIteration]: We unified 111 AI predicates to 111 [2019-09-20 13:30:30,964 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:30,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:30,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:30:30,965 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:30,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:30,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:30,966 INFO L87 Difference]: Start difference. First operand 876 states and 1025 transitions. Second operand 2 states. [2019-09-20 13:30:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,967 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:30,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:30,967 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-09-20 13:30:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,967 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:30,967 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:30,968 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 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 13:30:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:30,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2019-09-20 13:30:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,969 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:30,969 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:30,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:30,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:30 BoogieIcfgContainer [2019-09-20 13:30:30,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:30,978 INFO L168 Benchmark]: Toolchain (without parser) took 7444.98 ms. Allocated memory was 131.6 MB in the beginning and 324.0 MB in the end (delta: 192.4 MB). Free memory was 84.1 MB in the beginning and 111.2 MB in the end (delta: -27.1 MB). Peak memory consumption was 165.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,978 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 822.01 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 83.9 MB in the beginning and 162.1 MB in the end (delta: -78.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,980 INFO L168 Benchmark]: Boogie Preprocessor took 121.71 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 157.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,981 INFO L168 Benchmark]: RCFGBuilder took 1383.70 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 157.8 MB in the beginning and 184.7 MB in the end (delta: -27.0 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,982 INFO L168 Benchmark]: TraceAbstraction took 5112.24 ms. Allocated memory was 221.2 MB in the beginning and 324.0 MB in the end (delta: 102.8 MB). Free memory was 183.4 MB in the beginning and 111.2 MB in the end (delta: 72.2 MB). Peak memory consumption was 175.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:30,986 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 822.01 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 83.9 MB in the beginning and 162.1 MB in the end (delta: -78.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.71 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 157.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1383.70 ms. Allocated memory was 199.2 MB in the beginning and 221.2 MB in the end (delta: 22.0 MB). Free memory was 157.8 MB in the beginning and 184.7 MB in the end (delta: -27.0 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5112.24 ms. Allocated memory was 221.2 MB in the beginning and 324.0 MB in the end (delta: 102.8 MB). Free memory was 183.4 MB in the beginning and 111.2 MB in the end (delta: 72.2 MB). Peak memory consumption was 175.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 557]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 257 locations, 1 error locations. SAFE Result, 5.0s OverallTime, 10 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1713 SDtfs, 928 SDslu, 3560 SDs, 0 SdLazy, 1203 SolverSat, 271 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=876occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 849 NumberOfCodeBlocks, 849 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 839 ConstructedInterpolants, 0 QuantifiedInterpolants, 122854 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...