java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:48:51,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:48:51,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:48:51,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:48:51,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:48:51,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:48:51,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:48:51,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:48:51,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:48:51,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:48:51,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:48:51,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:48:51,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:48:51,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:48:51,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:48:51,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:48:51,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:48:51,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:48:51,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:48:51,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:48:51,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:48:51,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:48:51,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:48:51,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:48:51,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:48:51,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:48:51,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:48:51,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:48:51,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:48:51,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:48:51,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:48:51,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:48:51,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:48:51,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:48:51,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:48:51,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:48:51,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:48:51,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:48:51,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:48:51,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:48:51,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:48:51,514 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 [2019-09-10 02:48:51,541 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:48:51,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:48:51,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:48:51,542 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:48:51,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:48:51,543 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:48:51,543 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:48:51,543 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:48:51,543 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:48:51,543 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:48:51,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:48:51,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:48:51,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:48:51,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:48:51,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:48:51,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:48:51,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:48:51,546 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:48:51,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:48:51,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:48:51,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:48:51,546 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:48:51,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:48:51,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:48:51,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:48:51,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:48:51,548 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:48:51,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:48:51,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:48:51,548 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:48:51,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:48:51,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:48:51,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:48:51,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:48:51,608 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:48:51,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product48.cil.c [2019-09-10 02:48:51,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f76ef08/c2ae4ca07d0947bcbde7e45bc2f0052c/FLAG73803ebb8 [2019-09-10 02:48:52,181 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:48:52,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product48.cil.c [2019-09-10 02:48:52,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f76ef08/c2ae4ca07d0947bcbde7e45bc2f0052c/FLAG73803ebb8 [2019-09-10 02:48:52,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f76ef08/c2ae4ca07d0947bcbde7e45bc2f0052c [2019-09-10 02:48:52,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:48:52,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:48:52,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:48:52,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:48:52,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:48:52,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1677a6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52, skipping insertion in model container [2019-09-10 02:48:52,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,506 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:48:52,568 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:48:52,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:48:52,999 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:48:53,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:48:53,134 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:48:53,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53 WrapperNode [2019-09-10 02:48:53,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:48:53,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:48:53,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:48:53,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:48:53,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (1/1) ... [2019-09-10 02:48:53,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (1/1) ... [2019-09-10 02:48:53,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (1/1) ... [2019-09-10 02:48:53,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (1/1) ... [2019-09-10 02:48:53,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (1/1) ... [2019-09-10 02:48:53,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (1/1) ... [2019-09-10 02:48:53,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (1/1) ... [2019-09-10 02:48:53,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:48:53,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:48:53,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:48:53,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:48:53,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (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 [2019-09-10 02:48:53,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:48:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:48:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:48:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:48:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:48:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:48:53,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:48:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:48:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:48:53,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:48:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:48:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:48:53,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:48:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:48:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:48:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:48:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:48:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-10 02:48:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:48:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-10 02:48:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:48:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:48:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:48:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:48:53,338 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:48:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:48:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-10 02:48:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-10 02:48:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-10 02:48:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-10 02:48:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:48:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:48:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:48:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:48:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:48:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:48:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:48:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:48:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:48:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:48:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:48:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:48:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:48:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:48:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:48:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:48:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:48:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:48:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:48:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:48:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:48:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:48:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:48:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:48:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:48:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:48:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:48:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-10 02:48:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-10 02:48:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:48:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:48:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:48:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:48:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:48:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:48:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:48:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-10 02:48:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:48:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:48:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:48:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-10 02:48:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:48:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-10 02:48:53,347 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:48:53,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-10 02:48:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:48:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:48:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:48:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:48:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:48:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:48:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:48:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:48:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:48:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:48:53,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:48:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:48:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:48:53,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:48:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:48:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:48:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:48:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:48:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:48:53,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:48:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:48:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:48:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:48:54,432 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:48:54,433 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:48:54,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:48:54 BoogieIcfgContainer [2019-09-10 02:48:54,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:48:54,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:48:54,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:48:54,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:48:54,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:48:52" (1/3) ... [2019-09-10 02:48:54,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e7d617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:48:54, skipping insertion in model container [2019-09-10 02:48:54,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:53" (2/3) ... [2019-09-10 02:48:54,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e7d617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:48:54, skipping insertion in model container [2019-09-10 02:48:54,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:48:54" (3/3) ... [2019-09-10 02:48:54,444 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product48.cil.c [2019-09-10 02:48:54,455 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:48:54,465 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:48:54,483 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:48:54,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:48:54,513 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:48:54,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:48:54,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:48:54,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:48:54,514 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:48:54,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:48:54,515 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:48:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2019-09-10 02:48:54,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-10 02:48:54,556 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:54,558 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:54,560 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:54,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:54,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1956679058, now seen corresponding path program 1 times [2019-09-10 02:48:54,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:54,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:54,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:54,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:54,622 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:54,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:54,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:48:54,968 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:54,978 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:48:54,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:48:54,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:54,996 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 2 states. [2019-09-10 02:48:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:55,028 INFO L93 Difference]: Finished difference Result 156 states and 184 transitions. [2019-09-10 02:48:55,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:48:55,029 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-10 02:48:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:55,043 INFO L225 Difference]: With dead ends: 156 [2019-09-10 02:48:55,043 INFO L226 Difference]: Without dead ends: 145 [2019-09-10 02:48:55,045 INFO L628 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 [2019-09-10 02:48:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-09-10 02:48:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2019-09-10 02:48:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-09-10 02:48:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2019-09-10 02:48:55,103 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 51 [2019-09-10 02:48:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:55,104 INFO L475 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2019-09-10 02:48:55,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:48:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2019-09-10 02:48:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-10 02:48:55,108 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:55,108 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:55,108 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:55,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1975214799, now seen corresponding path program 1 times [2019-09-10 02:48:55,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:55,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:55,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:55,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:55,111 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:55,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:55,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:48:55,242 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:55,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:48:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:48:55,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:48:55,247 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 3 states. [2019-09-10 02:48:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:55,277 INFO L93 Difference]: Finished difference Result 136 states and 160 transitions. [2019-09-10 02:48:55,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:48:55,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-10 02:48:55,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:55,284 INFO L225 Difference]: With dead ends: 136 [2019-09-10 02:48:55,284 INFO L226 Difference]: Without dead ends: 136 [2019-09-10 02:48:55,285 INFO L628 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 [2019-09-10 02:48:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-09-10 02:48:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-09-10 02:48:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-09-10 02:48:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2019-09-10 02:48:55,299 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 52 [2019-09-10 02:48:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:55,300 INFO L475 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2019-09-10 02:48:55,300 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:48:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2019-09-10 02:48:55,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-10 02:48:55,303 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:55,303 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:55,303 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:55,304 INFO L82 PathProgramCache]: Analyzing trace with hash -881076325, now seen corresponding path program 1 times [2019-09-10 02:48:55,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:55,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:55,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:55,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:55,305 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:55,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:55,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:48:55,469 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:55,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:48:55,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:48:55,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:48:55,471 INFO L87 Difference]: Start difference. First operand 136 states and 160 transitions. Second operand 7 states. [2019-09-10 02:48:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:55,998 INFO L93 Difference]: Finished difference Result 295 states and 358 transitions. [2019-09-10 02:48:55,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:48:55,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-10 02:48:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:56,003 INFO L225 Difference]: With dead ends: 295 [2019-09-10 02:48:56,003 INFO L226 Difference]: Without dead ends: 295 [2019-09-10 02:48:56,004 INFO L628 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 [2019-09-10 02:48:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2019-09-10 02:48:56,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 283. [2019-09-10 02:48:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2019-09-10 02:48:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 346 transitions. [2019-09-10 02:48:56,079 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 346 transitions. Word has length 57 [2019-09-10 02:48:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:56,080 INFO L475 AbstractCegarLoop]: Abstraction has 283 states and 346 transitions. [2019-09-10 02:48:56,080 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:48:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 346 transitions. [2019-09-10 02:48:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-10 02:48:56,086 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:56,086 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:56,087 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:56,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1318351478, now seen corresponding path program 1 times [2019-09-10 02:48:56,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:56,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:56,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:56,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:56,089 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:56,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:56,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:48:56,246 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:56,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:48:56,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:48:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:48:56,247 INFO L87 Difference]: Start difference. First operand 283 states and 346 transitions. Second operand 6 states. [2019-09-10 02:48:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:56,485 INFO L93 Difference]: Finished difference Result 520 states and 638 transitions. [2019-09-10 02:48:56,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:48:56,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-10 02:48:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:56,494 INFO L225 Difference]: With dead ends: 520 [2019-09-10 02:48:56,494 INFO L226 Difference]: Without dead ends: 520 [2019-09-10 02:48:56,495 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:48:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2019-09-10 02:48:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 514. [2019-09-10 02:48:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2019-09-10 02:48:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 632 transitions. [2019-09-10 02:48:56,549 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 632 transitions. Word has length 62 [2019-09-10 02:48:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:56,550 INFO L475 AbstractCegarLoop]: Abstraction has 514 states and 632 transitions. [2019-09-10 02:48:56,550 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:48:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 632 transitions. [2019-09-10 02:48:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 02:48:56,556 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:56,556 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:56,558 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:56,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:56,559 INFO L82 PathProgramCache]: Analyzing trace with hash 35250534, now seen corresponding path program 1 times [2019-09-10 02:48:56,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:56,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:56,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:56,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:56,560 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:56,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:56,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:48:56,649 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:56,649 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:48:56,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:48:56,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:48:56,650 INFO L87 Difference]: Start difference. First operand 514 states and 632 transitions. Second operand 7 states. [2019-09-10 02:48:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:57,432 INFO L93 Difference]: Finished difference Result 869 states and 1102 transitions. [2019-09-10 02:48:57,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-10 02:48:57,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-10 02:48:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:57,437 INFO L225 Difference]: With dead ends: 869 [2019-09-10 02:48:57,438 INFO L226 Difference]: Without dead ends: 869 [2019-09-10 02:48:57,438 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:48:57,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-09-10 02:48:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 771. [2019-09-10 02:48:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2019-09-10 02:48:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 935 transitions. [2019-09-10 02:48:57,485 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 935 transitions. Word has length 66 [2019-09-10 02:48:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:57,487 INFO L475 AbstractCegarLoop]: Abstraction has 771 states and 935 transitions. [2019-09-10 02:48:57,487 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:48:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 935 transitions. [2019-09-10 02:48:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 02:48:57,493 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:57,494 INFO L399 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] [2019-09-10 02:48:57,494 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:57,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1738725350, now seen corresponding path program 1 times [2019-09-10 02:48:57,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:57,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:57,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:57,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:57,496 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:57,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:57,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:48:57,589 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:57,589 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:48:57,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:48:57,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:48:57,590 INFO L87 Difference]: Start difference. First operand 771 states and 935 transitions. Second operand 4 states. [2019-09-10 02:48:57,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:57,866 INFO L93 Difference]: Finished difference Result 2105 states and 2677 transitions. [2019-09-10 02:48:57,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:48:57,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-09-10 02:48:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:57,885 INFO L225 Difference]: With dead ends: 2105 [2019-09-10 02:48:57,885 INFO L226 Difference]: Without dead ends: 2105 [2019-09-10 02:48:57,886 INFO L628 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 [2019-09-10 02:48:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2019-09-10 02:48:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2059. [2019-09-10 02:48:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2019-09-10 02:48:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2585 transitions. [2019-09-10 02:48:58,017 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2585 transitions. Word has length 104 [2019-09-10 02:48:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:58,017 INFO L475 AbstractCegarLoop]: Abstraction has 2059 states and 2585 transitions. [2019-09-10 02:48:58,018 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:48:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2585 transitions. [2019-09-10 02:48:58,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 02:48:58,033 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:58,033 INFO L399 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] [2019-09-10 02:48:58,034 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:58,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1498185221, now seen corresponding path program 1 times [2019-09-10 02:48:58,034 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:58,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:58,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:58,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:58,039 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:58,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:58,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:48:58,241 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:58,242 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:48:58,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:48:58,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:48:58,244 INFO L87 Difference]: Start difference. First operand 2059 states and 2585 transitions. Second operand 6 states. [2019-09-10 02:48:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:58,303 INFO L93 Difference]: Finished difference Result 2143 states and 2689 transitions. [2019-09-10 02:48:58,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:48:58,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2019-09-10 02:48:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:58,321 INFO L225 Difference]: With dead ends: 2143 [2019-09-10 02:48:58,322 INFO L226 Difference]: Without dead ends: 2143 [2019-09-10 02:48:58,322 INFO L628 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 [2019-09-10 02:48:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2019-09-10 02:48:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2119. [2019-09-10 02:48:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2119 states. [2019-09-10 02:48:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 2649 transitions. [2019-09-10 02:48:58,446 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 2649 transitions. Word has length 104 [2019-09-10 02:48:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:58,446 INFO L475 AbstractCegarLoop]: Abstraction has 2119 states and 2649 transitions. [2019-09-10 02:48:58,447 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:48:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 2649 transitions. [2019-09-10 02:48:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 02:48:58,453 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:58,454 INFO L399 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] [2019-09-10 02:48:58,454 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:58,455 INFO L82 PathProgramCache]: Analyzing trace with hash 430087481, now seen corresponding path program 1 times [2019-09-10 02:48:58,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:58,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:58,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:58,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:58,456 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:58,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:58,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 02:48:58,607 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:58,608 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 02:48:58,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 02:48:58,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:48:58,612 INFO L87 Difference]: Start difference. First operand 2119 states and 2649 transitions. Second operand 8 states. [2019-09-10 02:48:58,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:58,654 INFO L93 Difference]: Finished difference Result 1755 states and 2163 transitions. [2019-09-10 02:48:58,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:48:58,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-09-10 02:48:58,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:58,666 INFO L225 Difference]: With dead ends: 1755 [2019-09-10 02:48:58,666 INFO L226 Difference]: Without dead ends: 1755 [2019-09-10 02:48:58,667 INFO L628 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 [2019-09-10 02:48:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2019-09-10 02:48:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1755. [2019-09-10 02:48:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2019-09-10 02:48:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2163 transitions. [2019-09-10 02:48:58,745 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2163 transitions. Word has length 104 [2019-09-10 02:48:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:58,745 INFO L475 AbstractCegarLoop]: Abstraction has 1755 states and 2163 transitions. [2019-09-10 02:48:58,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 02:48:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2163 transitions. [2019-09-10 02:48:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-10 02:48:58,751 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:58,751 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:58,751 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:58,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:58,752 INFO L82 PathProgramCache]: Analyzing trace with hash 832876050, now seen corresponding path program 1 times [2019-09-10 02:48:58,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:58,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:58,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:58,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:58,753 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:48:58,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:48:58,909 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:48:58,910 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 109 with the following transitions: [2019-09-10 02:48:58,912 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [129], [132], [134], [143], [147], [151], [154], [159], [162], [167], [173], [179], [187], [189], [192], [194], [197], [200], [221], [222], [223], [225], [230], [233], [236], [238], [243], [245], [246], [247], [248], [254], [258], [302], [306], [307], [310], [311], [314], [316], [319], [329], [330], [331], [355], [357], [358], [376], [377], [427], [428], [433], [435], [438], [446], [447], [448], [449], [450], [451], [452], [453], [454], [494], [495], [496], [497], [498], [499], [504], [508], [509], [510], [511], [512], [514], [515], [516], [517], [518], [519], [522], [523], [524], [530], [531], [532], [533], [540], [541], [542], [544], [545], [550], [551], [552] [2019-09-10 02:48:58,966 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:48:58,966 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:48:59,068 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:48:59,070 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. [2019-09-10 02:48:59,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:59,076 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:48:59,164 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:48:59,164 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:48:59,174 INFO L420 sIntCurrentIteration]: We unified 107 AI predicates to 107 [2019-09-10 02:48:59,174 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:48:59,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:48:59,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-10 02:48:59,175 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:59,176 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:48:59,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:48:59,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:59,177 INFO L87 Difference]: Start difference. First operand 1755 states and 2163 transitions. Second operand 2 states. [2019-09-10 02:48:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:59,178 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:48:59,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:48:59,178 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 108 [2019-09-10 02:48:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:59,179 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:48:59,179 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:48:59,179 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:48:59,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:48:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:48:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:48:59,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2019-09-10 02:48:59,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:59,181 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:48:59,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:48:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:48:59,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:48:59,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:48:59 BoogieIcfgContainer [2019-09-10 02:48:59,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:48:59,193 INFO L168 Benchmark]: Toolchain (without parser) took 6702.75 ms. Allocated memory was 134.2 MB in the beginning and 313.0 MB in the end (delta: 178.8 MB). Free memory was 89.9 MB in the beginning and 106.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 162.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:59,195 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.2 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:48:59,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.21 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 89.7 MB in the beginning and 165.3 MB in the end (delta: -75.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:59,198 INFO L168 Benchmark]: Boogie Preprocessor took 131.93 ms. Allocated memory is still 200.8 MB. Free memory was 165.3 MB in the beginning and 160.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:59,200 INFO L168 Benchmark]: RCFGBuilder took 1167.06 ms. Allocated memory was 200.8 MB in the beginning and 228.6 MB in the end (delta: 27.8 MB). Free memory was 160.9 MB in the beginning and 192.3 MB in the end (delta: -31.4 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:59,206 INFO L168 Benchmark]: TraceAbstraction took 4753.15 ms. Allocated memory was 228.6 MB in the beginning and 313.0 MB in the end (delta: 84.4 MB). Free memory was 192.3 MB in the beginning and 106.5 MB in the end (delta: 85.9 MB). Peak memory consumption was 170.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:59,216 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 134.2 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 646.21 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 89.7 MB in the beginning and 165.3 MB in the end (delta: -75.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.93 ms. Allocated memory is still 200.8 MB. Free memory was 165.3 MB in the beginning and 160.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1167.06 ms. Allocated memory was 200.8 MB in the beginning and 228.6 MB in the end (delta: 27.8 MB). Free memory was 160.9 MB in the beginning and 192.3 MB in the end (delta: -31.4 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4753.15 ms. Allocated memory was 228.6 MB in the beginning and 313.0 MB in the end (delta: 84.4 MB). Free memory was 192.3 MB in the beginning and 106.5 MB in the end (delta: 85.9 MB). Peak memory consumption was 170.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 885]: 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 42 procedures, 247 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1483 SDtfs, 829 SDslu, 3485 SDs, 0 SdLazy, 974 SolverSat, 139 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2119occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.0373831775700935 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 186 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 708 NumberOfCodeBlocks, 708 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 699 ConstructedInterpolants, 0 QuantifiedInterpolants, 92658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...