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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:50,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:50,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:50,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:50,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:50,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:50,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:50,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:50,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:50,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:50,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:50,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:50,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:50,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:50,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:50,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:50,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:50,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:50,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:50,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:50,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:50,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:50,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:50,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:50,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:50,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:50,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:50,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:50,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:50,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:50,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:50,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:50,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:50,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:50,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:50,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:50,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:50,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:50,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:50,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:50,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:50,532 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 [2019-09-16 17:09:50,552 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:50,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:50,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:50,553 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:50,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:50,553 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:50,554 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:50,554 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:50,554 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:50,554 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:50,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:50,555 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:50,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:50,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:50,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:50,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:50,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:50,556 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:50,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:50,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:50,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:50,557 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:50,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:50,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:50,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:50,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:50,558 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:50,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:50,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:50,559 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:50,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:50,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:50,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:50,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:50,608 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:50,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-09-16 17:09:50,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cc3ca28/4fcee4c0c16546a5ae10b278e3e14c2b/FLAG8023acd98 [2019-09-16 17:09:51,248 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:51,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-09-16 17:09:51,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cc3ca28/4fcee4c0c16546a5ae10b278e3e14c2b/FLAG8023acd98 [2019-09-16 17:09:51,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cc3ca28/4fcee4c0c16546a5ae10b278e3e14c2b [2019-09-16 17:09:51,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:51,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:51,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:51,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:51,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:51,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:51" (1/1) ... [2019-09-16 17:09:51,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e11f23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:51, skipping insertion in model container [2019-09-16 17:09:51,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:51" (1/1) ... [2019-09-16 17:09:51,582 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:51,648 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:52,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:52,113 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:52,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:52,277 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:52,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52 WrapperNode [2019-09-16 17:09:52,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:52,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:52,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:52,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:52,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (1/1) ... [2019-09-16 17:09:52,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:52,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:52,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:52,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:52,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (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 [2019-09-16 17:09:52,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:52,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:52,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:09:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:09:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:09:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:09:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:09:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:09:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:53,526 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:53,526 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:53,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:53 BoogieIcfgContainer [2019-09-16 17:09:53,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:53,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:53,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:53,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:53,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:51" (1/3) ... [2019-09-16 17:09:53,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1ac6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:53, skipping insertion in model container [2019-09-16 17:09:53,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:52" (2/3) ... [2019-09-16 17:09:53,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1ac6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:53, skipping insertion in model container [2019-09-16 17:09:53,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:53" (3/3) ... [2019-09-16 17:09:53,538 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2019-09-16 17:09:53,549 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:53,558 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:53,577 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:53,607 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:53,607 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:53,607 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:53,607 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:53,608 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:53,608 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:53,608 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:53,609 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2019-09-16 17:09:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:53,646 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:53,648 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] [2019-09-16 17:09:53,651 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:53,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:53,657 INFO L82 PathProgramCache]: Analyzing trace with hash -878720759, now seen corresponding path program 1 times [2019-09-16 17:09:53,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:53,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:53,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:53,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:53,722 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:54,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:54,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:54,077 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:54,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:54,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:54,111 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 2 states. [2019-09-16 17:09:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:54,161 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2019-09-16 17:09:54,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:54,163 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:54,178 INFO L225 Difference]: With dead ends: 155 [2019-09-16 17:09:54,178 INFO L226 Difference]: Without dead ends: 144 [2019-09-16 17:09:54,180 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 [2019-09-16 17:09:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-16 17:09:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-09-16 17:09:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-16 17:09:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2019-09-16 17:09:54,232 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 59 [2019-09-16 17:09:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:54,233 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2019-09-16 17:09:54,233 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2019-09-16 17:09:54,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:54,237 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:54,237 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] [2019-09-16 17:09:54,238 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:54,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:54,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1980606616, now seen corresponding path program 1 times [2019-09-16 17:09:54,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:54,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:54,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,242 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:54,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:54,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:54,338 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:54,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:54,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:54,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:54,341 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 3 states. [2019-09-16 17:09:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:54,358 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2019-09-16 17:09:54,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:54,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:54,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:54,361 INFO L225 Difference]: With dead ends: 135 [2019-09-16 17:09:54,361 INFO L226 Difference]: Without dead ends: 135 [2019-09-16 17:09:54,362 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 [2019-09-16 17:09:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-09-16 17:09:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2019-09-16 17:09:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-09-16 17:09:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2019-09-16 17:09:54,376 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 60 [2019-09-16 17:09:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:54,377 INFO L475 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2019-09-16 17:09:54,377 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2019-09-16 17:09:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-16 17:09:54,382 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:54,382 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:54,384 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:54,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1839911150, now seen corresponding path program 1 times [2019-09-16 17:09:54,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:54,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:54,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:54,388 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:54,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:54,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:54,595 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:54,596 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:54,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:54,597 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand 7 states. [2019-09-16 17:09:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:55,222 INFO L93 Difference]: Finished difference Result 298 states and 358 transitions. [2019-09-16 17:09:55,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:55,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-16 17:09:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:55,231 INFO L225 Difference]: With dead ends: 298 [2019-09-16 17:09:55,233 INFO L226 Difference]: Without dead ends: 298 [2019-09-16 17:09:55,234 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 [2019-09-16 17:09:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2019-09-16 17:09:55,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 290. [2019-09-16 17:09:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-09-16 17:09:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 352 transitions. [2019-09-16 17:09:55,297 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 352 transitions. Word has length 64 [2019-09-16 17:09:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:55,298 INFO L475 AbstractCegarLoop]: Abstraction has 290 states and 352 transitions. [2019-09-16 17:09:55,298 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:55,298 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 352 transitions. [2019-09-16 17:09:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:09:55,307 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:55,307 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:55,308 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:55,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:55,310 INFO L82 PathProgramCache]: Analyzing trace with hash 423224560, now seen corresponding path program 1 times [2019-09-16 17:09:55,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:55,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:55,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,314 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:09:55,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:55,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:55,485 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:55,485 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:55,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:55,486 INFO L87 Difference]: Start difference. First operand 290 states and 352 transitions. Second operand 7 states. [2019-09-16 17:09:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:56,339 INFO L93 Difference]: Finished difference Result 469 states and 590 transitions. [2019-09-16 17:09:56,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:09:56,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-16 17:09:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:56,345 INFO L225 Difference]: With dead ends: 469 [2019-09-16 17:09:56,345 INFO L226 Difference]: Without dead ends: 469 [2019-09-16 17:09:56,346 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 [2019-09-16 17:09:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2019-09-16 17:09:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 416. [2019-09-16 17:09:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-09-16 17:09:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 503 transitions. [2019-09-16 17:09:56,379 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 503 transitions. Word has length 70 [2019-09-16 17:09:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:56,380 INFO L475 AbstractCegarLoop]: Abstraction has 416 states and 503 transitions. [2019-09-16 17:09:56,380 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 503 transitions. [2019-09-16 17:09:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-16 17:09:56,382 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:56,382 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:56,382 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash -742421187, now seen corresponding path program 1 times [2019-09-16 17:09:56,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:56,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:56,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,387 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:56,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:56,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:56,513 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:56,513 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:56,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:56,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:56,514 INFO L87 Difference]: Start difference. First operand 416 states and 503 transitions. Second operand 6 states. [2019-09-16 17:09:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:56,563 INFO L93 Difference]: Finished difference Result 426 states and 513 transitions. [2019-09-16 17:09:56,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:56,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2019-09-16 17:09:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:56,567 INFO L225 Difference]: With dead ends: 426 [2019-09-16 17:09:56,567 INFO L226 Difference]: Without dead ends: 426 [2019-09-16 17:09:56,568 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 [2019-09-16 17:09:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-09-16 17:09:56,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2019-09-16 17:09:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-09-16 17:09:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 513 transitions. [2019-09-16 17:09:56,622 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 513 transitions. Word has length 92 [2019-09-16 17:09:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:56,624 INFO L475 AbstractCegarLoop]: Abstraction has 426 states and 513 transitions. [2019-09-16 17:09:56,624 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 513 transitions. [2019-09-16 17:09:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-16 17:09:56,626 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:56,626 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:56,627 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,631 INFO L82 PathProgramCache]: Analyzing trace with hash -40821313, now seen corresponding path program 1 times [2019-09-16 17:09:56,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:56,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:56,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,635 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:56,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:56,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:56,757 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:56,758 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:56,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:56,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:56,759 INFO L87 Difference]: Start difference. First operand 426 states and 513 transitions. Second operand 8 states. [2019-09-16 17:09:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:56,795 INFO L93 Difference]: Finished difference Result 440 states and 527 transitions. [2019-09-16 17:09:56,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:56,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-09-16 17:09:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:56,799 INFO L225 Difference]: With dead ends: 440 [2019-09-16 17:09:56,799 INFO L226 Difference]: Without dead ends: 440 [2019-09-16 17:09:56,800 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 [2019-09-16 17:09:56,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-09-16 17:09:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 434. [2019-09-16 17:09:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-09-16 17:09:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-09-16 17:09:56,819 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 92 [2019-09-16 17:09:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:56,819 INFO L475 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-09-16 17:09:56,819 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-09-16 17:09:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-16 17:09:56,821 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:56,822 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:56,822 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1684659584, now seen corresponding path program 1 times [2019-09-16 17:09:56,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:56,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:56,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,825 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:56,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:56,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:56,897 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:56,897 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:56,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:56,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:56,898 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 4 states. [2019-09-16 17:09:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:57,159 INFO L93 Difference]: Finished difference Result 982 states and 1225 transitions. [2019-09-16 17:09:57,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:09:57,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-09-16 17:09:57,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:57,169 INFO L225 Difference]: With dead ends: 982 [2019-09-16 17:09:57,169 INFO L226 Difference]: Without dead ends: 982 [2019-09-16 17:09:57,170 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2019-09-16 17:09:57,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 965. [2019-09-16 17:09:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-09-16 17:09:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1188 transitions. [2019-09-16 17:09:57,248 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1188 transitions. Word has length 92 [2019-09-16 17:09:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,249 INFO L475 AbstractCegarLoop]: Abstraction has 965 states and 1188 transitions. [2019-09-16 17:09:57,249 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:09:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1188 transitions. [2019-09-16 17:09:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-16 17:09:57,251 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,251 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:57,251 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1838654426, now seen corresponding path program 1 times [2019-09-16 17:09:57,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,260 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:57,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:09:57,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,449 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:09:57,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:09:57,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:57,450 INFO L87 Difference]: Start difference. First operand 965 states and 1188 transitions. Second operand 9 states. [2019-09-16 17:09:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:58,718 INFO L93 Difference]: Finished difference Result 1885 states and 2323 transitions. [2019-09-16 17:09:58,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:09:58,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-16 17:09:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:58,728 INFO L225 Difference]: With dead ends: 1885 [2019-09-16 17:09:58,728 INFO L226 Difference]: Without dead ends: 1885 [2019-09-16 17:09:58,729 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:09:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2019-09-16 17:09:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1660. [2019-09-16 17:09:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2019-09-16 17:09:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2011 transitions. [2019-09-16 17:09:58,806 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2011 transitions. Word has length 96 [2019-09-16 17:09:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:58,806 INFO L475 AbstractCegarLoop]: Abstraction has 1660 states and 2011 transitions. [2019-09-16 17:09:58,806 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:09:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2011 transitions. [2019-09-16 17:09:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-16 17:09:58,810 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:58,811 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:09:58,811 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:58,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1624055928, now seen corresponding path program 1 times [2019-09-16 17:09:58,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:58,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:58,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,814 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-16 17:09:58,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:09:58,976 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:09:58,977 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2019-09-16 17:09:58,980 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [94], [97], [101], [102], [103], [119], [123], [124], [125], [128], [130], [136], [140], [143], [144], [145], [154], [158], [162], [165], [168], [170], [176], [178], [181], [197], [198], [208], [209], [210], [212], [217], [219], [220], [221], [222], [228], [231], [235], [241], [270], [274], [275], [278], [280], [283], [290], [293], [296], [300], [301], [304], [305], [306], [308], [309], [310], [312], [315], [317], [320], [323], [332], [334], [335], [336], [430], [431], [441], [449], [450], [451], [452], [453], [454], [455], [456], [457], [491], [492], [493], [494], [497], [498], [499], [500], [501], [502], [507], [508], [511], [512], [513], [514], [515], [516], [517], [518], [519], [520], [525], [526], [527], [528], [531], [532], [533], [534], [535], [536], [537], [538], [539], [543], [544], [545], [553], [554], [555] [2019-09-16 17:09:59,029 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:09:59,029 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:09:59,111 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:09:59,113 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:09:59,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,118 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:09:59,185 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:09:59,186 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:09:59,233 INFO L420 sIntCurrentIteration]: We unified 156 AI predicates to 156 [2019-09-16 17:09:59,234 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:09:59,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:09:59,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:09:59,235 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,236 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:59,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:59,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:59,237 INFO L87 Difference]: Start difference. First operand 1660 states and 2011 transitions. Second operand 2 states. [2019-09-16 17:09:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,238 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:09:59,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:59,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-09-16 17:09:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,238 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:09:59,238 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:09:59,239 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:59,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:09:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:09:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:09:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:09:59,240 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2019-09-16 17:09:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,240 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:09:59,240 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:59,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:09:59,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:09:59,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:09:59 BoogieIcfgContainer [2019-09-16 17:09:59,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:09:59,249 INFO L168 Benchmark]: Toolchain (without parser) took 7687.18 ms. Allocated memory was 131.6 MB in the beginning and 338.7 MB in the end (delta: 207.1 MB). Free memory was 86.1 MB in the beginning and 295.9 MB in the end (delta: -209.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:09:59,250 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 131.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.99 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 85.9 MB in the beginning and 163.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,252 INFO L168 Benchmark]: Boogie Preprocessor took 90.26 ms. Allocated memory is still 198.7 MB. Free memory was 163.0 MB in the beginning and 159.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,253 INFO L168 Benchmark]: RCFGBuilder took 1159.90 ms. Allocated memory was 198.7 MB in the beginning and 220.2 MB in the end (delta: 21.5 MB). Free memory was 159.2 MB in the beginning and 189.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 92.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,254 INFO L168 Benchmark]: TraceAbstraction took 5716.46 ms. Allocated memory was 220.2 MB in the beginning and 338.7 MB in the end (delta: 118.5 MB). Free memory was 187.7 MB in the beginning and 295.9 MB in the end (delta: -108.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:59,264 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 131.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 712.99 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 85.9 MB in the beginning and 163.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.26 ms. Allocated memory is still 198.7 MB. Free memory was 163.0 MB in the beginning and 159.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1159.90 ms. Allocated memory was 198.7 MB in the beginning and 220.2 MB in the end (delta: 21.5 MB). Free memory was 159.2 MB in the beginning and 189.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 92.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5716.46 ms. Allocated memory was 220.2 MB in the beginning and 338.7 MB in the end (delta: 118.5 MB). Free memory was 187.7 MB in the beginning and 295.9 MB in the end (delta: -108.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 948]: 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, 251 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1480 SDtfs, 1076 SDslu, 3415 SDs, 0 SdLazy, 1750 SolverSat, 300 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1660occurred in iteration=8, 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, 0.8461538461538461 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 309 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 773 ConstructedInterpolants, 0 QuantifiedInterpolants, 121202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 59/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...