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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:14,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:14,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:14,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:14,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:14,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:14,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:14,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:14,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:14,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:14,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:14,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:14,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:14,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:14,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:14,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:14,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:14,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:14,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:14,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:14,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:14,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:14,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:14,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:14,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:14,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:14,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:14,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:14,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:14,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:14,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:14,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:14,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:14,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:14,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:14,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:14,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:14,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:14,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:14,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:14,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:14,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:30:14,475 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:14,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:14,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:14,476 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:14,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:14,477 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:14,477 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:14,477 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:14,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:14,478 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:14,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:14,479 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:14,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:14,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:14,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:14,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:14,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:14,481 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:14,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:14,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:14,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:14,482 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:14,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:14,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:14,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:14,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:14,483 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:14,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:14,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:14,484 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:14,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:14,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:14,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:14,543 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:14,543 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:14,544 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2019-09-20 13:30:14,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba0052e67/5fc8ff1e825a4abebff47044d17d67af/FLAG835bda775 [2019-09-20 13:30:15,048 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:15,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2019-09-20 13:30:15,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba0052e67/5fc8ff1e825a4abebff47044d17d67af/FLAG835bda775 [2019-09-20 13:30:15,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba0052e67/5fc8ff1e825a4abebff47044d17d67af [2019-09-20 13:30:15,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:15,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:15,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:15,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:15,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:15,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f67533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15, skipping insertion in model container [2019-09-20 13:30:15,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,362 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:15,410 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:15,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:15,852 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:15,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:16,037 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:16,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16 WrapperNode [2019-09-20 13:30:16,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:16,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:16,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:16,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:16,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:16,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:16,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:16,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:16,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:16,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:16,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:16,242 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:16,243 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:30:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:16,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:16,246 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:16,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:16,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:16,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:16,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:16,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:16,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:16,250 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:30:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:17,403 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:17,403 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:17,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:17 BoogieIcfgContainer [2019-09-20 13:30:17,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:17,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:17,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:17,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:17,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:15" (1/3) ... [2019-09-20 13:30:17,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0e2fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:17, skipping insertion in model container [2019-09-20 13:30:17,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (2/3) ... [2019-09-20 13:30:17,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0e2fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:17, skipping insertion in model container [2019-09-20 13:30:17,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:17" (3/3) ... [2019-09-20 13:30:17,412 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2019-09-20 13:30:17,422 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:17,430 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:17,446 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:17,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:17,470 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:17,470 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:17,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:17,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:17,471 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:17,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:17,471 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-09-20 13:30:17,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:17,502 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:17,503 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:17,506 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash 805370938, now seen corresponding path program 1 times [2019-09-20 13:30:17,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:17,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:17,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:17,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:17,571 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:17,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:17,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:17,901 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:17,906 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:17,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:17,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:17,924 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 2 states. [2019-09-20 13:30:17,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:17,956 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2019-09-20 13:30:17,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:17,957 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:30:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:17,970 INFO L225 Difference]: With dead ends: 159 [2019-09-20 13:30:17,970 INFO L226 Difference]: Without dead ends: 148 [2019-09-20 13:30:17,972 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-09-20 13:30:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-09-20 13:30:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-09-20 13:30:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2019-09-20 13:30:18,026 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 51 [2019-09-20 13:30:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:18,027 INFO L475 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2019-09-20 13:30:18,027 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2019-09-20 13:30:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:18,031 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:18,031 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:18,032 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:18,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:18,032 INFO L82 PathProgramCache]: Analyzing trace with hash -239223915, now seen corresponding path program 1 times [2019-09-20 13:30:18,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:18,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:18,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,035 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:18,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:18,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:18,134 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:18,136 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:18,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:18,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:18,137 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand 3 states. [2019-09-20 13:30:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:18,154 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2019-09-20 13:30:18,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:18,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:30:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:18,157 INFO L225 Difference]: With dead ends: 139 [2019-09-20 13:30:18,157 INFO L226 Difference]: Without dead ends: 139 [2019-09-20 13:30:18,158 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:18,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-20 13:30:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-09-20 13:30:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-09-20 13:30:18,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2019-09-20 13:30:18,178 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2019-09-20 13:30:18,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:18,178 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2019-09-20 13:30:18,178 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2019-09-20 13:30:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-20 13:30:18,184 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:18,184 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:18,184 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:18,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:18,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2031785454, now seen corresponding path program 1 times [2019-09-20 13:30:18,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:18,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:18,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,188 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:18,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:18,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:18,308 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:18,309 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:18,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:18,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:18,310 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 7 states. [2019-09-20 13:30:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:18,674 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2019-09-20 13:30:18,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:18,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-09-20 13:30:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:18,677 INFO L225 Difference]: With dead ends: 139 [2019-09-20 13:30:18,677 INFO L226 Difference]: Without dead ends: 139 [2019-09-20 13:30:18,678 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:18,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-20 13:30:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-09-20 13:30:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-09-20 13:30:18,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2019-09-20 13:30:18,691 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 56 [2019-09-20 13:30:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:18,691 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2019-09-20 13:30:18,691 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2019-09-20 13:30:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-20 13:30:18,694 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:18,694 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:18,694 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1519881096, now seen corresponding path program 1 times [2019-09-20 13:30:18,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:18,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:18,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,698 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:18,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:18,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:18,872 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:18,873 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:18,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:18,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:18,874 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 5 states. [2019-09-20 13:30:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:19,363 INFO L93 Difference]: Finished difference Result 243 states and 282 transitions. [2019-09-20 13:30:19,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:19,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2019-09-20 13:30:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:19,366 INFO L225 Difference]: With dead ends: 243 [2019-09-20 13:30:19,367 INFO L226 Difference]: Without dead ends: 243 [2019-09-20 13:30:19,367 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2019-09-20 13:30:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 225. [2019-09-20 13:30:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-09-20 13:30:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2019-09-20 13:30:19,388 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 74 [2019-09-20 13:30:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:19,389 INFO L475 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2019-09-20 13:30:19,389 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2019-09-20 13:30:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-20 13:30:19,391 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:19,391 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:19,391 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1815815577, now seen corresponding path program 1 times [2019-09-20 13:30:19,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:19,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:19,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,395 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:19,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:19,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:19,521 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:19,524 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:19,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:19,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:19,524 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand 6 states. [2019-09-20 13:30:19,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:19,755 INFO L93 Difference]: Finished difference Result 404 states and 463 transitions. [2019-09-20 13:30:19,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:19,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2019-09-20 13:30:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:19,766 INFO L225 Difference]: With dead ends: 404 [2019-09-20 13:30:19,766 INFO L226 Difference]: Without dead ends: 404 [2019-09-20 13:30:19,767 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2019-09-20 13:30:19,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 398. [2019-09-20 13:30:19,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2019-09-20 13:30:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 456 transitions. [2019-09-20 13:30:19,824 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 456 transitions. Word has length 88 [2019-09-20 13:30:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:19,826 INFO L475 AbstractCegarLoop]: Abstraction has 398 states and 456 transitions. [2019-09-20 13:30:19,826 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 456 transitions. [2019-09-20 13:30:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:30:19,830 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:19,833 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:19,833 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:19,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1743532533, now seen corresponding path program 1 times [2019-09-20 13:30:19,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:19,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:19,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,837 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:20,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:20,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:20,034 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:20,035 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:20,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:20,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:20,036 INFO L87 Difference]: Start difference. First operand 398 states and 456 transitions. Second operand 7 states. [2019-09-20 13:30:20,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:20,641 INFO L93 Difference]: Finished difference Result 427 states and 501 transitions. [2019-09-20 13:30:20,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:30:20,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2019-09-20 13:30:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:20,645 INFO L225 Difference]: With dead ends: 427 [2019-09-20 13:30:20,645 INFO L226 Difference]: Without dead ends: 427 [2019-09-20 13:30:20,646 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:30:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-09-20 13:30:20,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 397. [2019-09-20 13:30:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2019-09-20 13:30:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2019-09-20 13:30:20,666 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 92 [2019-09-20 13:30:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:20,667 INFO L475 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2019-09-20 13:30:20,667 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2019-09-20 13:30:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:20,669 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:20,669 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:20,669 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:20,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1672267508, now seen corresponding path program 1 times [2019-09-20 13:30:20,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:20,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:20,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,672 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:20,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:20,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:20,739 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:20,740 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:20,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:20,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:20,741 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 6 states. [2019-09-20 13:30:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:20,768 INFO L93 Difference]: Finished difference Result 407 states and 463 transitions. [2019-09-20 13:30:20,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:20,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-20 13:30:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:20,772 INFO L225 Difference]: With dead ends: 407 [2019-09-20 13:30:20,772 INFO L226 Difference]: Without dead ends: 407 [2019-09-20 13:30:20,773 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2019-09-20 13:30:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2019-09-20 13:30:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2019-09-20 13:30:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2019-09-20 13:30:20,790 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 93 [2019-09-20 13:30:20,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:20,790 INFO L475 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2019-09-20 13:30:20,791 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2019-09-20 13:30:20,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:20,792 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:20,792 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:20,792 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:20,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1599880950, now seen corresponding path program 1 times [2019-09-20 13:30:20,793 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:20,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:20,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,796 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:20,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:20,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:30:20,920 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:20,925 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:30:20,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:30:20,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:20,926 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand 8 states. [2019-09-20 13:30:20,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:20,962 INFO L93 Difference]: Finished difference Result 421 states and 477 transitions. [2019-09-20 13:30:20,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:20,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-09-20 13:30:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:20,965 INFO L225 Difference]: With dead ends: 421 [2019-09-20 13:30:20,965 INFO L226 Difference]: Without dead ends: 421 [2019-09-20 13:30:20,965 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:20,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2019-09-20 13:30:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 415. [2019-09-20 13:30:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2019-09-20 13:30:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 471 transitions. [2019-09-20 13:30:20,980 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 471 transitions. Word has length 93 [2019-09-20 13:30:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:20,981 INFO L475 AbstractCegarLoop]: Abstraction has 415 states and 471 transitions. [2019-09-20 13:30:20,981 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:30:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 471 transitions. [2019-09-20 13:30:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:20,982 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:20,982 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:20,983 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:20,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1929646711, now seen corresponding path program 1 times [2019-09-20 13:30:20,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:20,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:20,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,986 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:21,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:21,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:30:21,061 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:21,062 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:30:21,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:30:21,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:21,062 INFO L87 Difference]: Start difference. First operand 415 states and 471 transitions. Second operand 4 states. [2019-09-20 13:30:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,280 INFO L93 Difference]: Finished difference Result 863 states and 1025 transitions. [2019-09-20 13:30:21,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:30:21,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-09-20 13:30:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,285 INFO L225 Difference]: With dead ends: 863 [2019-09-20 13:30:21,285 INFO L226 Difference]: Without dead ends: 863 [2019-09-20 13:30:21,286 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-09-20 13:30:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 549. [2019-09-20 13:30:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-09-20 13:30:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 618 transitions. [2019-09-20 13:30:21,311 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 618 transitions. Word has length 93 [2019-09-20 13:30:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,311 INFO L475 AbstractCegarLoop]: Abstraction has 549 states and 618 transitions. [2019-09-20 13:30:21,312 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:30:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 618 transitions. [2019-09-20 13:30:21,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:30:21,313 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:21,314 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:21,314 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:21,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,314 INFO L82 PathProgramCache]: Analyzing trace with hash 446997693, now seen corresponding path program 1 times [2019-09-20 13:30:21,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:21,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:21,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,317 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:21,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:21,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:21,373 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:21,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:21,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:21,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:21,374 INFO L87 Difference]: Start difference. First operand 549 states and 618 transitions. Second operand 3 states. [2019-09-20 13:30:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,401 INFO L93 Difference]: Finished difference Result 863 states and 986 transitions. [2019-09-20 13:30:21,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:21,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-09-20 13:30:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,406 INFO L225 Difference]: With dead ends: 863 [2019-09-20 13:30:21,406 INFO L226 Difference]: Without dead ends: 863 [2019-09-20 13:30:21,407 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-09-20 13:30:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 713. [2019-09-20 13:30:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2019-09-20 13:30:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 813 transitions. [2019-09-20 13:30:21,431 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 813 transitions. Word has length 97 [2019-09-20 13:30:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,432 INFO L475 AbstractCegarLoop]: Abstraction has 713 states and 813 transitions. [2019-09-20 13:30:21,432 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 813 transitions. [2019-09-20 13:30:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-09-20 13:30:21,435 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:21,435 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:30:21,436 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,436 INFO L82 PathProgramCache]: Analyzing trace with hash 350097324, now seen corresponding path program 1 times [2019-09-20 13:30:21,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:21,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:21,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,439 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-20 13:30:21,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:21,532 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:21,533 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 161 with the following transitions: [2019-09-20 13:30:21,535 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [159], [161], [164], [167], [169], [172], [189], [191], [194], [196], [199], [202], [205], [213], [223], [224], [225], [226], [227], [229], [234], [236], [237], [245], [249], [255], [282], [283], [291], [294], [296], [299], [309], [312], [316], [317], [320], [335], [338], [339], [340], [341], [435], [436], [441], [443], [446], [454], [455], [456], [457], [458], [459], [460], [461], [462], [502], [503], [504], [505], [506], [507], [508], [509], [512], [513], [514], [515], [516], [518], [519], [522], [523], [524], [525], [530], [531], [532], [533], [544], [545], [548], [549], [550], [558], [559], [560] [2019-09-20 13:30:21,576 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:21,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:21,646 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:21,648 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. [2019-09-20 13:30:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,653 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:21,708 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:21,708 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:21,713 INFO L420 sIntCurrentIteration]: We unified 159 AI predicates to 159 [2019-09-20 13:30:21,713 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:21,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:21,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-09-20 13:30:21,714 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:21,715 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:21,716 INFO L87 Difference]: Start difference. First operand 713 states and 813 transitions. Second operand 2 states. [2019-09-20 13:30:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,719 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:21,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:21,719 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 160 [2019-09-20 13:30:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,720 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:21,720 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:21,720 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:21,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:21,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2019-09-20 13:30:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,721 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:21,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:21,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:21,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:21 BoogieIcfgContainer [2019-09-20 13:30:21,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:21,729 INFO L168 Benchmark]: Toolchain (without parser) took 6382.91 ms. Allocated memory was 138.9 MB in the beginning and 324.5 MB in the end (delta: 185.6 MB). Free memory was 84.5 MB in the beginning and 106.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 163.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,730 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.97 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 84.3 MB in the beginning and 164.7 MB in the end (delta: -80.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,734 INFO L168 Benchmark]: Boogie Preprocessor took 119.56 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 160.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,739 INFO L168 Benchmark]: RCFGBuilder took 1245.75 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 160.2 MB in the beginning and 188.5 MB in the end (delta: -28.3 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,740 INFO L168 Benchmark]: TraceAbstraction took 4321.06 ms. Allocated memory was 222.3 MB in the beginning and 324.5 MB in the end (delta: 102.2 MB). Free memory was 187.2 MB in the beginning and 106.3 MB in the end (delta: 80.9 MB). Peak memory consumption was 183.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:21,751 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.97 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 84.3 MB in the beginning and 164.7 MB in the end (delta: -80.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.56 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 160.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1245.75 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 160.2 MB in the beginning and 188.5 MB in the end (delta: -28.3 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4321.06 ms. Allocated memory was 222.3 MB in the beginning and 324.5 MB in the end (delta: 102.2 MB). Free memory was 187.2 MB in the beginning and 106.3 MB in the end (delta: 80.9 MB). Peak memory consumption was 183.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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, 250 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1755 SDtfs, 1021 SDslu, 3459 SDs, 0 SdLazy, 1120 SolverSat, 256 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=713occurred in iteration=10, 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, 0.8301886792452831 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 524 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 949 NumberOfCodeBlocks, 949 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 938 ConstructedInterpolants, 0 QuantifiedInterpolants, 141997 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 51/59 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...