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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:23,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:23,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:23,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:23,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:23,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:23,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:23,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:23,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:23,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:23,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:23,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:23,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:23,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:23,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:23,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:23,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:23,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:23,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:23,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:23,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:23,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:23,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:23,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:23,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:23,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:23,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:23,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:23,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:23,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:23,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:23,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:23,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:23,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:23,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:23,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:23,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:23,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:23,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:23,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:23,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:23,487 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 13:30:23,511 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:23,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:23,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:23,513 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:23,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:23,514 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:23,514 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:23,514 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:23,514 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:23,515 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:23,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:23,516 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:23,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:23,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:23,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:23,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:23,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:23,518 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:23,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:23,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:23,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:23,519 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:23,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:23,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:23,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:23,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:23,520 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:23,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:23,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:23,521 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:23,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:23,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:23,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:23,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:23,603 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:23,605 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-09-20 13:30:23,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45a63fd8/cea9902e402d472f973bc78130b11773/FLAG9200462cd [2019-09-20 13:30:24,230 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:24,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-09-20 13:30:24,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45a63fd8/cea9902e402d472f973bc78130b11773/FLAG9200462cd [2019-09-20 13:30:24,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45a63fd8/cea9902e402d472f973bc78130b11773 [2019-09-20 13:30:24,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:24,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:24,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:24,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:24,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:24,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3205cab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:24, skipping insertion in model container [2019-09-20 13:30:24,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:24" (1/1) ... [2019-09-20 13:30:24,524 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:24,588 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:25,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:25,063 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:25,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:25,203 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:25,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25 WrapperNode [2019-09-20 13:30:25,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:25,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:25,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:25,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:25,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (1/1) ... [2019-09-20 13:30:25,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:25,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:25,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:25,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:25,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (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 13:30:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:30:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:30:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:26,800 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:26,803 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:26,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:26 BoogieIcfgContainer [2019-09-20 13:30:26,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:26,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:26,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:26,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:26,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:24" (1/3) ... [2019-09-20 13:30:26,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd017a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:26, skipping insertion in model container [2019-09-20 13:30:26,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:25" (2/3) ... [2019-09-20 13:30:26,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd017a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:26, skipping insertion in model container [2019-09-20 13:30:26,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:26" (3/3) ... [2019-09-20 13:30:26,817 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2019-09-20 13:30:26,830 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:26,840 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:26,860 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:26,888 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:26,889 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:26,889 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:26,890 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:26,890 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:26,891 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:26,891 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:26,891 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states. [2019-09-20 13:30:26,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:26,938 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:26,939 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 13:30:26,941 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1165852340, now seen corresponding path program 1 times [2019-09-20 13:30:26,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,013 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:27,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:27,350 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,356 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:27,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:27,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:27,374 INFO L87 Difference]: Start difference. First operand 204 states. Second operand 2 states. [2019-09-20 13:30:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,407 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2019-09-20 13:30:27,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:27,408 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:30:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,427 INFO L225 Difference]: With dead ends: 172 [2019-09-20 13:30:27,428 INFO L226 Difference]: Without dead ends: 161 [2019-09-20 13:30:27,432 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 13:30:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-09-20 13:30:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2019-09-20 13:30:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-09-20 13:30:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 193 transitions. [2019-09-20 13:30:27,510 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 193 transitions. Word has length 51 [2019-09-20 13:30:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,511 INFO L475 AbstractCegarLoop]: Abstraction has 161 states and 193 transitions. [2019-09-20 13:30:27,511 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 193 transitions. [2019-09-20 13:30:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:27,515 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,515 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 13:30:27,515 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,516 INFO L82 PathProgramCache]: Analyzing trace with hash -558328651, now seen corresponding path program 1 times [2019-09-20 13:30:27,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,519 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:27,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:27,675 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,678 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:27,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:27,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:27,679 INFO L87 Difference]: Start difference. First operand 161 states and 193 transitions. Second operand 3 states. [2019-09-20 13:30:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:27,698 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2019-09-20 13:30:27,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:27,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:30:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:27,703 INFO L225 Difference]: With dead ends: 152 [2019-09-20 13:30:27,703 INFO L226 Difference]: Without dead ends: 152 [2019-09-20 13:30:27,704 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 13:30:27,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-09-20 13:30:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-09-20 13:30:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-09-20 13:30:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2019-09-20 13:30:27,726 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 52 [2019-09-20 13:30:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:27,726 INFO L475 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2019-09-20 13:30:27,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2019-09-20 13:30:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-20 13:30:27,729 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:27,729 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 13:30:27,730 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:27,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2137633786, now seen corresponding path program 1 times [2019-09-20 13:30:27,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:27,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:27,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:27,734 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:27,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:27,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:27,852 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:27,853 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:27,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:27,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:27,854 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand 7 states. [2019-09-20 13:30:28,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,454 INFO L93 Difference]: Finished difference Result 327 states and 398 transitions. [2019-09-20 13:30:28,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:28,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-09-20 13:30:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,460 INFO L225 Difference]: With dead ends: 327 [2019-09-20 13:30:28,460 INFO L226 Difference]: Without dead ends: 327 [2019-09-20 13:30:28,460 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-09-20 13:30:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2019-09-20 13:30:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2019-09-20 13:30:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 392 transitions. [2019-09-20 13:30:28,515 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 392 transitions. Word has length 56 [2019-09-20 13:30:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:28,518 INFO L475 AbstractCegarLoop]: Abstraction has 319 states and 392 transitions. [2019-09-20 13:30:28,518 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 392 transitions. [2019-09-20 13:30:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-20 13:30:28,524 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:28,525 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] [2019-09-20 13:30:28,527 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:28,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1129081232, now seen corresponding path program 1 times [2019-09-20 13:30:28,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:28,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:28,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:28,533 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:28,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:28,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:28,697 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:28,699 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:28,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:28,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:28,700 INFO L87 Difference]: Start difference. First operand 319 states and 392 transitions. Second operand 6 states. [2019-09-20 13:30:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:28,926 INFO L93 Difference]: Finished difference Result 592 states and 730 transitions. [2019-09-20 13:30:28,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:28,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-20 13:30:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:28,932 INFO L225 Difference]: With dead ends: 592 [2019-09-20 13:30:28,932 INFO L226 Difference]: Without dead ends: 592 [2019-09-20 13:30:28,933 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:28,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-09-20 13:30:28,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 586. [2019-09-20 13:30:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-09-20 13:30:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 724 transitions. [2019-09-20 13:30:28,999 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 724 transitions. Word has length 62 [2019-09-20 13:30:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:29,000 INFO L475 AbstractCegarLoop]: Abstraction has 586 states and 724 transitions. [2019-09-20 13:30:29,000 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 724 transitions. [2019-09-20 13:30:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-20 13:30:29,004 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:29,004 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] [2019-09-20 13:30:29,004 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:29,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1112141772, now seen corresponding path program 1 times [2019-09-20 13:30:29,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:29,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:29,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:29,008 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:29,133 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 13:30:29,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:29,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:29,133 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:29,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:29,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:29,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:29,137 INFO L87 Difference]: Start difference. First operand 586 states and 724 transitions. Second operand 7 states. [2019-09-20 13:30:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:29,978 INFO L93 Difference]: Finished difference Result 963 states and 1218 transitions. [2019-09-20 13:30:29,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:30:29,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-20 13:30:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:29,991 INFO L225 Difference]: With dead ends: 963 [2019-09-20 13:30:29,991 INFO L226 Difference]: Without dead ends: 963 [2019-09-20 13:30:29,992 INFO L636 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 [2019-09-20 13:30:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-09-20 13:30:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 867. [2019-09-20 13:30:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2019-09-20 13:30:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1055 transitions. [2019-09-20 13:30:30,062 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1055 transitions. Word has length 66 [2019-09-20 13:30:30,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,063 INFO L475 AbstractCegarLoop]: Abstraction has 867 states and 1055 transitions. [2019-09-20 13:30:30,063 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1055 transitions. [2019-09-20 13:30:30,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:30:30,070 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,070 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:30,071 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,071 INFO L82 PathProgramCache]: Analyzing trace with hash 831572138, now seen corresponding path program 1 times [2019-09-20 13:30:30,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,076 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:30,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:30,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:30:30,238 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,238 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:30:30,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:30:30,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:30,239 INFO L87 Difference]: Start difference. First operand 867 states and 1055 transitions. Second operand 8 states. [2019-09-20 13:30:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,276 INFO L93 Difference]: Finished difference Result 895 states and 1083 transitions. [2019-09-20 13:30:30,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:30,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-09-20 13:30:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,283 INFO L225 Difference]: With dead ends: 895 [2019-09-20 13:30:30,283 INFO L226 Difference]: Without dead ends: 895 [2019-09-20 13:30:30,284 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 13:30:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-09-20 13:30:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 883. [2019-09-20 13:30:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2019-09-20 13:30:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1071 transitions. [2019-09-20 13:30:30,321 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1071 transitions. Word has length 108 [2019-09-20 13:30:30,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,321 INFO L475 AbstractCegarLoop]: Abstraction has 883 states and 1071 transitions. [2019-09-20 13:30:30,321 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:30:30,321 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1071 transitions. [2019-09-20 13:30:30,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:30:30,324 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,324 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:30,325 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1107589908, now seen corresponding path program 1 times [2019-09-20 13:30:30,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,328 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:30,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:30,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:30,418 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,419 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:30,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:30,421 INFO L87 Difference]: Start difference. First operand 883 states and 1071 transitions. Second operand 6 states. [2019-09-20 13:30:30,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,457 INFO L93 Difference]: Finished difference Result 911 states and 1103 transitions. [2019-09-20 13:30:30,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:30,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-20 13:30:30,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,464 INFO L225 Difference]: With dead ends: 911 [2019-09-20 13:30:30,464 INFO L226 Difference]: Without dead ends: 911 [2019-09-20 13:30:30,464 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 13:30:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2019-09-20 13:30:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 903. [2019-09-20 13:30:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-09-20 13:30:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1091 transitions. [2019-09-20 13:30:30,502 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1091 transitions. Word has length 108 [2019-09-20 13:30:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,503 INFO L475 AbstractCegarLoop]: Abstraction has 903 states and 1091 transitions. [2019-09-20 13:30:30,503 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1091 transitions. [2019-09-20 13:30:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:30:30,506 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,506 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:30,507 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1600742153, now seen corresponding path program 1 times [2019-09-20 13:30:30,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,510 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:30:30,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:30,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:30:30,621 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:30,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:30:30,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:30:30,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:30,622 INFO L87 Difference]: Start difference. First operand 903 states and 1091 transitions. Second operand 4 states. [2019-09-20 13:30:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:30,885 INFO L93 Difference]: Finished difference Result 1970 states and 2479 transitions. [2019-09-20 13:30:30,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:30:30,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-09-20 13:30:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:30,898 INFO L225 Difference]: With dead ends: 1970 [2019-09-20 13:30:30,899 INFO L226 Difference]: Without dead ends: 1970 [2019-09-20 13:30:30,899 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2019-09-20 13:30:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1939. [2019-09-20 13:30:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2019-09-20 13:30:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2407 transitions. [2019-09-20 13:30:30,984 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2407 transitions. Word has length 108 [2019-09-20 13:30:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:30,984 INFO L475 AbstractCegarLoop]: Abstraction has 1939 states and 2407 transitions. [2019-09-20 13:30:30,984 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:30:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2407 transitions. [2019-09-20 13:30:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:30:30,989 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:30,989 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:30,989 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:30,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1324720637, now seen corresponding path program 1 times [2019-09-20 13:30:30,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:30,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:30,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:30,992 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:31,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:31,147 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:31,148 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-20 13:30:31,150 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [181], [197], [198], [201], [203], [206], [208], [211], [214], [226], [227], [237], [239], [244], [247], [250], [252], [257], [259], [260], [266], [270], [303], [304], [312], [315], [317], [320], [330], [333], [337], [338], [341], [342], [357], [360], [361], [362], [386], [388], [389], [456], [457], [462], [464], [467], [475], [476], [477], [478], [479], [480], [481], [482], [483], [525], [526], [527], [528], [529], [530], [533], [537], [538], [539], [540], [541], [543], [544], [545], [546], [547], [548], [551], [552], [553], [559], [560], [561], [562], [573], [574], [577], [578], [579], [581], [582], [587], [588], [589] [2019-09-20 13:30:31,206 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:31,207 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:31,296 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:31,297 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 71 root evaluator evaluations with a maximum evaluation depth of 0. Performed 71 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:30:31,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:31,301 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:31,347 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:31,348 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:31,351 INFO L420 sIntCurrentIteration]: We unified 111 AI predicates to 111 [2019-09-20 13:30:31,352 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:31,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:31,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-20 13:30:31,353 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:31,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:31,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:31,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:31,354 INFO L87 Difference]: Start difference. First operand 1939 states and 2407 transitions. Second operand 2 states. [2019-09-20 13:30:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:31,355 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:31,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:31,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-09-20 13:30:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:31,355 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:31,355 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:31,356 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:31,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2019-09-20 13:30:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:31,357 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:31,357 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:31,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:31,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:31 BoogieIcfgContainer [2019-09-20 13:30:31,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:31,366 INFO L168 Benchmark]: Toolchain (without parser) took 6859.43 ms. Allocated memory was 138.4 MB in the beginning and 341.8 MB in the end (delta: 203.4 MB). Free memory was 85.3 MB in the beginning and 174.8 MB in the end (delta: -89.5 MB). Peak memory consumption was 113.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:31,367 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:31,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.24 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 85.1 MB in the beginning and 163.1 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:31,368 INFO L168 Benchmark]: Boogie Preprocessor took 126.16 ms. Allocated memory is still 198.7 MB. Free memory was 163.1 MB in the beginning and 158.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:31,369 INFO L168 Benchmark]: RCFGBuilder took 1474.45 ms. Allocated memory was 198.7 MB in the beginning and 220.2 MB in the end (delta: 21.5 MB). Free memory was 158.6 MB in the beginning and 186.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:31,370 INFO L168 Benchmark]: TraceAbstraction took 4554.04 ms. Allocated memory was 220.2 MB in the beginning and 341.8 MB in the end (delta: 121.6 MB). Free memory was 186.4 MB in the beginning and 174.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 133.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:31,379 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.24 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 85.1 MB in the beginning and 163.1 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.16 ms. Allocated memory is still 198.7 MB. Free memory was 163.1 MB in the beginning and 158.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1474.45 ms. Allocated memory was 198.7 MB in the beginning and 220.2 MB in the end (delta: 21.5 MB). Free memory was 158.6 MB in the beginning and 186.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4554.04 ms. Allocated memory was 220.2 MB in the beginning and 341.8 MB in the end (delta: 121.6 MB). Free memory was 186.4 MB in the beginning and 174.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 133.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 150]: 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 44 procedures, 263 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1642 SDtfs, 900 SDslu, 3945 SDs, 0 SdLazy, 1066 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1939occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 161 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 723 NumberOfCodeBlocks, 723 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 714 ConstructedInterpolants, 0 QuantifiedInterpolants, 96980 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...