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_spec5_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:29,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:29,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:29,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:29,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:29,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:29,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:29,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:29,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:29,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:29,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:29,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:29,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:29,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:29,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:29,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:29,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:29,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:29,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:29,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:29,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:29,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:29,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:29,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:29,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:29,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:29,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:29,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:29,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:29,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:29,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:29,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:29,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:29,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:29,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:29,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:29,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:29,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:29,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:29,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:29,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:29,611 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 13:31:29,626 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:29,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:29,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:29,627 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:29,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:29,628 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:29,628 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:29,629 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:29,629 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:29,629 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:29,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:29,630 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:29,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:29,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:29,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:29,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:29,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:29,631 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:29,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:29,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:29,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:29,632 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:29,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:29,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:29,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:29,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:29,633 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:29,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:29,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:29,634 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:29,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:29,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:29,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:29,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:29,681 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:29,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c [2019-09-20 13:31:29,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84afde2f/884a77e203fd42bca5f19f00359b4a69/FLAG78ec75371 [2019-09-20 13:31:30,257 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:30,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c [2019-09-20 13:31:30,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84afde2f/884a77e203fd42bca5f19f00359b4a69/FLAG78ec75371 [2019-09-20 13:31:30,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84afde2f/884a77e203fd42bca5f19f00359b4a69 [2019-09-20 13:31:30,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:30,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:30,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:30,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:30,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:30,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425f21cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30, skipping insertion in model container [2019-09-20 13:31:30,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,617 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:30,677 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:31,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:31,205 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:31,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:31,339 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:31,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31 WrapperNode [2019-09-20 13:31:31,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:31,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:31,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:31,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:31,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:31,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:31,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:31,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:31,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (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 13:31:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:32,632 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:32,633 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:32,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:32 BoogieIcfgContainer [2019-09-20 13:31:32,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:32,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:32,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:32,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:32,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:30" (1/3) ... [2019-09-20 13:31:32,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3ac355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:32, skipping insertion in model container [2019-09-20 13:31:32,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (2/3) ... [2019-09-20 13:31:32,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3ac355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:32, skipping insertion in model container [2019-09-20 13:31:32,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:32" (3/3) ... [2019-09-20 13:31:32,643 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product42.cil.c [2019-09-20 13:31:32,653 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:32,661 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:32,679 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:32,712 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:32,712 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:32,712 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:32,712 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:32,713 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:32,714 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:32,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:32,714 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2019-09-20 13:31:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:32,765 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:32,767 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:32,770 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:32,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:32,775 INFO L82 PathProgramCache]: Analyzing trace with hash -318385319, now seen corresponding path program 1 times [2019-09-20 13:31:32,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:32,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:32,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,839 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,164 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 13:31:33,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:33,167 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,174 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:33,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:33,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:33,189 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 2 states. [2019-09-20 13:31:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:33,235 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2019-09-20 13:31:33,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:33,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:33,261 INFO L225 Difference]: With dead ends: 145 [2019-09-20 13:31:33,262 INFO L226 Difference]: Without dead ends: 134 [2019-09-20 13:31:33,264 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 13:31:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-09-20 13:31:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-09-20 13:31:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-09-20 13:31:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2019-09-20 13:31:33,323 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 59 [2019-09-20 13:31:33,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:33,324 INFO L475 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2019-09-20 13:31:33,324 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2019-09-20 13:31:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:33,328 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:33,328 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:33,329 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:33,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1634844471, now seen corresponding path program 1 times [2019-09-20 13:31:33,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:33,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:33,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,332 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,440 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 13:31:33,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:33,441 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,443 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:33,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:33,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:33,444 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand 3 states. [2019-09-20 13:31:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:33,471 INFO L93 Difference]: Finished difference Result 125 states and 143 transitions. [2019-09-20 13:31:33,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:33,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:33,477 INFO L225 Difference]: With dead ends: 125 [2019-09-20 13:31:33,478 INFO L226 Difference]: Without dead ends: 125 [2019-09-20 13:31:33,479 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 13:31:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-09-20 13:31:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-09-20 13:31:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-09-20 13:31:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2019-09-20 13:31:33,506 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 60 [2019-09-20 13:31:33,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:33,509 INFO L475 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2019-09-20 13:31:33,509 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2019-09-20 13:31:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:31:33,514 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:33,515 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:33,515 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:33,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:33,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1075077358, now seen corresponding path program 1 times [2019-09-20 13:31:33,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:33,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:33,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,520 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,718 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 13:31:33,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:33,720 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,721 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:33,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:33,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:33,722 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand 7 states. [2019-09-20 13:31:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:34,079 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2019-09-20 13:31:34,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:34,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:31:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:34,082 INFO L225 Difference]: With dead ends: 125 [2019-09-20 13:31:34,082 INFO L226 Difference]: Without dead ends: 125 [2019-09-20 13:31:34,082 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:31:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-09-20 13:31:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-09-20 13:31:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-09-20 13:31:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2019-09-20 13:31:34,092 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 65 [2019-09-20 13:31:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:34,094 INFO L475 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2019-09-20 13:31:34,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2019-09-20 13:31:34,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-20 13:31:34,099 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:34,099 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] [2019-09-20 13:31:34,100 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1759456211, now seen corresponding path program 1 times [2019-09-20 13:31:34,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:34,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:34,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,108 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:34,296 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 13:31:34,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:34,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:31:34,297 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:34,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:31:34,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:31:34,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:31:34,298 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand 5 states. [2019-09-20 13:31:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:34,832 INFO L93 Difference]: Finished difference Result 222 states and 259 transitions. [2019-09-20 13:31:34,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:34,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2019-09-20 13:31:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:34,836 INFO L225 Difference]: With dead ends: 222 [2019-09-20 13:31:34,836 INFO L226 Difference]: Without dead ends: 222 [2019-09-20 13:31:34,836 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-09-20 13:31:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 203. [2019-09-20 13:31:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2019-09-20 13:31:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 233 transitions. [2019-09-20 13:31:34,853 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 233 transitions. Word has length 73 [2019-09-20 13:31:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:34,854 INFO L475 AbstractCegarLoop]: Abstraction has 203 states and 233 transitions. [2019-09-20 13:31:34,854 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:31:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 233 transitions. [2019-09-20 13:31:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-20 13:31:34,856 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:34,856 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] [2019-09-20 13:31:34,856 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1988493165, now seen corresponding path program 1 times [2019-09-20 13:31:34,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:34,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:34,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,860 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:34,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:34,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:34,996 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:34,997 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:34,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:34,998 INFO L87 Difference]: Start difference. First operand 203 states and 233 transitions. Second operand 7 states. [2019-09-20 13:31:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:35,746 INFO L93 Difference]: Finished difference Result 221 states and 258 transitions. [2019-09-20 13:31:35,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:35,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2019-09-20 13:31:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:35,750 INFO L225 Difference]: With dead ends: 221 [2019-09-20 13:31:35,750 INFO L226 Difference]: Without dead ends: 221 [2019-09-20 13:31:35,750 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:31:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-09-20 13:31:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 202. [2019-09-20 13:31:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-09-20 13:31:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 230 transitions. [2019-09-20 13:31:35,764 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 230 transitions. Word has length 87 [2019-09-20 13:31:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:35,765 INFO L475 AbstractCegarLoop]: Abstraction has 202 states and 230 transitions. [2019-09-20 13:31:35,765 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 230 transitions. [2019-09-20 13:31:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:31:35,767 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:35,767 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] [2019-09-20 13:31:35,768 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:35,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:35,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1941251357, now seen corresponding path program 1 times [2019-09-20 13:31:35,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:35,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:35,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,771 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:35,841 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 13:31:35,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:35,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:35,842 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:35,843 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:35,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:35,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:35,843 INFO L87 Difference]: Start difference. First operand 202 states and 230 transitions. Second operand 6 states. [2019-09-20 13:31:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:35,885 INFO L93 Difference]: Finished difference Result 209 states and 237 transitions. [2019-09-20 13:31:35,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:35,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2019-09-20 13:31:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:35,889 INFO L225 Difference]: With dead ends: 209 [2019-09-20 13:31:35,889 INFO L226 Difference]: Without dead ends: 209 [2019-09-20 13:31:35,890 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 13:31:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-09-20 13:31:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2019-09-20 13:31:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2019-09-20 13:31:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 235 transitions. [2019-09-20 13:31:35,901 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 235 transitions. Word has length 103 [2019-09-20 13:31:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:35,901 INFO L475 AbstractCegarLoop]: Abstraction has 207 states and 235 transitions. [2019-09-20 13:31:35,901 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 235 transitions. [2019-09-20 13:31:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:31:35,903 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:35,903 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] [2019-09-20 13:31:35,904 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:35,904 INFO L82 PathProgramCache]: Analyzing trace with hash -108136485, now seen corresponding path program 1 times [2019-09-20 13:31:35,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:35,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:35,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,907 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,026 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 13:31:36,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:36,027 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,028 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:36,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:36,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:36,029 INFO L87 Difference]: Start difference. First operand 207 states and 235 transitions. Second operand 8 states. [2019-09-20 13:31:36,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:36,065 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2019-09-20 13:31:36,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:36,065 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-09-20 13:31:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:36,069 INFO L225 Difference]: With dead ends: 214 [2019-09-20 13:31:36,069 INFO L226 Difference]: Without dead ends: 214 [2019-09-20 13:31:36,070 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-09-20 13:31:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2019-09-20 13:31:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-09-20 13:31:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 239 transitions. [2019-09-20 13:31:36,087 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 239 transitions. Word has length 103 [2019-09-20 13:31:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:36,089 INFO L475 AbstractCegarLoop]: Abstraction has 211 states and 239 transitions. [2019-09-20 13:31:36,089 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:36,090 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 239 transitions. [2019-09-20 13:31:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:31:36,092 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:36,092 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] [2019-09-20 13:31:36,093 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:36,093 INFO L82 PathProgramCache]: Analyzing trace with hash 861444538, now seen corresponding path program 1 times [2019-09-20 13:31:36,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:36,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:36,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,096 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,209 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 13:31:36,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:36,214 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,217 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:36,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:36,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:36,220 INFO L87 Difference]: Start difference. First operand 211 states and 239 transitions. Second operand 4 states. [2019-09-20 13:31:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:36,458 INFO L93 Difference]: Finished difference Result 413 states and 486 transitions. [2019-09-20 13:31:36,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:36,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-09-20 13:31:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:36,461 INFO L225 Difference]: With dead ends: 413 [2019-09-20 13:31:36,461 INFO L226 Difference]: Without dead ends: 413 [2019-09-20 13:31:36,462 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 13:31:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-09-20 13:31:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 404. [2019-09-20 13:31:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2019-09-20 13:31:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 469 transitions. [2019-09-20 13:31:36,484 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 469 transitions. Word has length 103 [2019-09-20 13:31:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:36,484 INFO L475 AbstractCegarLoop]: Abstraction has 404 states and 469 transitions. [2019-09-20 13:31:36,484 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 469 transitions. [2019-09-20 13:31:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:31:36,486 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:36,487 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] [2019-09-20 13:31:36,487 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:36,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:36,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2005328992, now seen corresponding path program 1 times [2019-09-20 13:31:36,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:36,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:36,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,490 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,685 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 13:31:36,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:36,686 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,686 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:36,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:36,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:36,687 INFO L87 Difference]: Start difference. First operand 404 states and 469 transitions. Second operand 9 states. [2019-09-20 13:31:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:37,808 INFO L93 Difference]: Finished difference Result 764 states and 884 transitions. [2019-09-20 13:31:37,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:37,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2019-09-20 13:31:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:37,814 INFO L225 Difference]: With dead ends: 764 [2019-09-20 13:31:37,815 INFO L226 Difference]: Without dead ends: 764 [2019-09-20 13:31:37,815 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-09-20 13:31:37,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 686. [2019-09-20 13:31:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-09-20 13:31:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 787 transitions. [2019-09-20 13:31:37,851 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 787 transitions. Word has length 107 [2019-09-20 13:31:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:37,852 INFO L475 AbstractCegarLoop]: Abstraction has 686 states and 787 transitions. [2019-09-20 13:31:37,852 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:37,852 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 787 transitions. [2019-09-20 13:31:37,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-20 13:31:37,855 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:37,855 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:37,856 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:37,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2092455891, now seen corresponding path program 1 times [2019-09-20 13:31:37,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:37,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:37,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:37,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:37,860 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-20 13:31:38,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:38,014 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:38,015 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2019-09-20 13:31:38,017 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [99], [103], [104], [105], [108], [110], [113], [120], [123], [124], [125], [134], [138], [142], [145], [148], [150], [156], [158], [164], [167], [186], [188], [193], [196], [197], [198], [199], [201], [206], [208], [209], [213], [216], [220], [226], [253], [254], [257], [261], [266], [270], [271], [274], [275], [276], [278], [279], [280], [282], [285], [287], [290], [293], [302], [304], [305], [306], [330], [332], [333], [351], [352], [402], [403], [413], [421], [422], [423], [424], [425], [426], [427], [428], [429], [461], [462], [463], [464], [467], [468], [469], [470], [475], [476], [479], [480], [481], [482], [483], [484], [485], [486], [487], [488], [489], [490], [491], [492], [497], [498], [499], [500], [501], [502], [503], [507], [508], [509], [511], [512], [517], [518], [519] [2019-09-20 13:31:38,059 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:38,059 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:38,146 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:38,148 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 13:31:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:38,152 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:38,212 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:38,213 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:38,217 INFO L420 sIntCurrentIteration]: We unified 150 AI predicates to 150 [2019-09-20 13:31:38,217 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:38,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:38,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:38,218 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:38,219 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:38,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:38,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:38,220 INFO L87 Difference]: Start difference. First operand 686 states and 787 transitions. Second operand 2 states. [2019-09-20 13:31:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:38,220 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:38,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:38,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 151 [2019-09-20 13:31:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:38,221 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:38,221 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:38,221 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 150 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 13:31:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:38,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2019-09-20 13:31:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:38,222 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:38,223 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:38,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:38,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:38 BoogieIcfgContainer [2019-09-20 13:31:38,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:38,231 INFO L168 Benchmark]: Toolchain (without parser) took 7632.11 ms. Allocated memory was 137.9 MB in the beginning and 342.9 MB in the end (delta: 205.0 MB). Free memory was 84.5 MB in the beginning and 295.0 MB in the end (delta: -210.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:31:38,232 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.05 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 84.3 MB in the beginning and 163.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,233 INFO L168 Benchmark]: Boogie Preprocessor took 98.66 ms. Allocated memory is still 198.7 MB. Free memory was 163.6 MB in the beginning and 159.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,234 INFO L168 Benchmark]: RCFGBuilder took 1193.96 ms. Allocated memory was 198.7 MB in the beginning and 218.6 MB in the end (delta: 19.9 MB). Free memory was 159.6 MB in the beginning and 189.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 94.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,235 INFO L168 Benchmark]: TraceAbstraction took 5592.77 ms. Allocated memory was 218.6 MB in the beginning and 342.9 MB in the end (delta: 124.3 MB). Free memory was 189.3 MB in the beginning and 295.0 MB in the end (delta: -105.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,240 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.05 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 84.3 MB in the beginning and 163.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.66 ms. Allocated memory is still 198.7 MB. Free memory was 163.6 MB in the beginning and 159.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1193.96 ms. Allocated memory was 198.7 MB in the beginning and 218.6 MB in the end (delta: 19.9 MB). Free memory was 159.6 MB in the beginning and 189.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 94.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5592.77 ms. Allocated memory was 218.6 MB in the beginning and 342.9 MB in the end (delta: 124.3 MB). Free memory was 189.3 MB in the beginning and 295.0 MB in the end (delta: -105.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 201]: 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 41 procedures, 236 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1435 SDtfs, 1127 SDslu, 2796 SDs, 0 SdLazy, 1644 SolverSat, 446 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=686occurred 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, 0.86 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 130 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 911 NumberOfCodeBlocks, 911 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 901 ConstructedInterpolants, 0 QuantifiedInterpolants, 145285 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 61/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...