/usr/bin/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:04:27,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:04:27,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:04:27,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:04:27,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:04:27,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:04:27,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:04:27,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:04:27,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:04:27,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:04:27,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:04:27,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:04:27,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:04:27,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:04:27,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:04:27,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:04:27,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:04:27,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:04:27,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:04:27,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:04:27,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:04:27,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:04:27,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:04:27,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:04:27,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:04:27,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:04:27,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:04:27,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:04:27,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:04:27,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:04:27,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:04:27,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:04:27,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:04:27,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:04:27,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:04:27,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:04:27,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:04:27,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:04:27,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:04:27,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:04:27,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:04:27,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:04:27,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:04:27,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:04:27,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:04:27,484 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:04:27,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:04:27,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:04:27,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:04:27,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:04:27,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:04:27,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:04:27,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:04:27,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:04:27,486 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:04:27,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:04:27,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:04:27,487 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:04:27,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:04:27,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:04:27,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:04:27,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:04:27,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:04:27,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:04:27,489 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:04:27,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:04:27,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:04:27,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:04:27,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:04:27,775 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:04:27,776 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-08-22 18:04:27,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0963e4bc3/a8f02f60f48c45eb86957402e79da4c5/FLAG147e5715e [2020-08-22 18:04:28,397 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:04:28,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-08-22 18:04:28,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0963e4bc3/a8f02f60f48c45eb86957402e79da4c5/FLAG147e5715e [2020-08-22 18:04:28,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0963e4bc3/a8f02f60f48c45eb86957402e79da4c5 [2020-08-22 18:04:28,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:04:28,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:04:28,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:28,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:04:28,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:04:28,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:28" (1/1) ... [2020-08-22 18:04:28,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d8522c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:28, skipping insertion in model container [2020-08-22 18:04:28,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:28" (1/1) ... [2020-08-22 18:04:28,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:04:28,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:04:29,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:29,160 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:04:29,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:29,275 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:04:29,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29 WrapperNode [2020-08-22 18:04:29,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:29,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:04:29,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:04:29,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:04:29,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (1/1) ... [2020-08-22 18:04:29,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (1/1) ... [2020-08-22 18:04:29,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (1/1) ... [2020-08-22 18:04:29,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (1/1) ... [2020-08-22 18:04:29,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (1/1) ... [2020-08-22 18:04:29,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (1/1) ... [2020-08-22 18:04:29,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (1/1) ... [2020-08-22 18:04:29,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:04:29,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:04:29,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:04:29,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:04:29,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (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 [2020-08-22 18:04:29,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:04:29,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:04:29,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:29,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:04:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:04:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:04:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:04:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:04:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:29,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:29,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:29,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:04:29,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:04:29,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:04:29,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:04:29,454 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:04:29,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:04:29,455 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:04:29,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:04:29,456 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:04:29,456 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:04:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:04:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:04:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:04:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:04:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 18:04:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:04:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:04:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:04:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:04:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:04:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:04:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:04:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:04:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:04:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 18:04:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:04:29,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:04:29,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:04:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:04:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:04:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:04:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:04:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:04:29,463 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:04:29,463 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:04:29,463 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:04:29,463 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:04:29,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:29,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:04:29,464 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:04:29,464 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:04:29,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:29,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:04:29,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:04:29,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:04:29,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:04:29,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:29,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:04:29,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:29,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:29,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:04:29,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:04:29,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:04:29,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:04:29,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:04:29,466 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:04:29,466 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:04:29,466 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:04:29,467 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:04:29,467 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:04:29,467 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:04:29,467 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:04:29,467 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:04:29,467 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:04:29,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:04:29,468 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:04:29,468 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:04:29,468 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 18:04:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:04:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:04:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:04:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:04:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:04:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 18:04:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:04:29,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:04:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:04:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:04:30,572 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:04:30,572 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:04:30,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:30 BoogieIcfgContainer [2020-08-22 18:04:30,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:04:30,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:04:30,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:04:30,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:04:30,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:04:28" (1/3) ... [2020-08-22 18:04:30,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a9a11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:30, skipping insertion in model container [2020-08-22 18:04:30,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:29" (2/3) ... [2020-08-22 18:04:30,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a9a11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:30, skipping insertion in model container [2020-08-22 18:04:30,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:30" (3/3) ... [2020-08-22 18:04:30,587 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c [2020-08-22 18:04:30,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:04:30,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:04:30,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:04:30,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:04:30,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:04:30,639 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:04:30,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:04:30,640 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:04:30,640 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:04:30,640 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:04:30,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:04:30,660 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-08-22 18:04:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:04:30,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:30,681 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:30,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:30,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2041023672, now seen corresponding path program 1 times [2020-08-22 18:04:30,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:30,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304156266] [2020-08-22 18:04:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:30,755 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,452 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:04:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:31,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304156266] [2020-08-22 18:04:31,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:31,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:04:31,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387280758] [2020-08-22 18:04:31,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:04:31,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:31,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:04:31,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:31,669 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-08-22 18:04:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:33,038 INFO L93 Difference]: Finished difference Result 449 states and 536 transitions. [2020-08-22 18:04:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:04:33,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:04:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:33,063 INFO L225 Difference]: With dead ends: 449 [2020-08-22 18:04:33,063 INFO L226 Difference]: Without dead ends: 282 [2020-08-22 18:04:33,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:33,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-22 18:04:33,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 241. [2020-08-22 18:04:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-22 18:04:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 261 transitions. [2020-08-22 18:04:33,230 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 261 transitions. Word has length 153 [2020-08-22 18:04:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:33,231 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 261 transitions. [2020-08-22 18:04:33,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:04:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 261 transitions. [2020-08-22 18:04:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:04:33,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:33,248 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:33,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:04:33,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:33,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:33,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1489723473, now seen corresponding path program 1 times [2020-08-22 18:04:33,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:33,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369607078] [2020-08-22 18:04:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:33,256 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,730 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:04:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:04:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:04:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:33,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369607078] [2020-08-22 18:04:33,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:33,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:04:33,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610835269] [2020-08-22 18:04:33,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:04:33,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:04:33,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:04:33,800 INFO L87 Difference]: Start difference. First operand 241 states and 261 transitions. Second operand 4 states. [2020-08-22 18:04:34,447 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:35,288 INFO L93 Difference]: Finished difference Result 360 states and 403 transitions. [2020-08-22 18:04:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:04:35,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:04:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:35,294 INFO L225 Difference]: With dead ends: 360 [2020-08-22 18:04:35,295 INFO L226 Difference]: Without dead ends: 265 [2020-08-22 18:04:35,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:04:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-08-22 18:04:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 231. [2020-08-22 18:04:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-22 18:04:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 248 transitions. [2020-08-22 18:04:35,405 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 248 transitions. Word has length 154 [2020-08-22 18:04:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:35,406 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 248 transitions. [2020-08-22 18:04:35,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:04:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 248 transitions. [2020-08-22 18:04:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 18:04:35,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:35,409 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:35,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:04:35,409 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:35,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:35,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2140088415, now seen corresponding path program 1 times [2020-08-22 18:04:35,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:35,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518730071] [2020-08-22 18:04:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:35,413 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,734 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 18:04:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:35,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518730071] [2020-08-22 18:04:35,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:35,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:04:35,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803368591] [2020-08-22 18:04:35,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:04:35,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:35,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:04:35,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:04:35,921 INFO L87 Difference]: Start difference. First operand 231 states and 248 transitions. Second operand 9 states. [2020-08-22 18:04:36,419 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:36,762 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:04:37,012 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:04:37,273 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:37,559 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:37,794 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:38,765 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:40,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:40,568 INFO L93 Difference]: Finished difference Result 611 states and 701 transitions. [2020-08-22 18:04:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:04:40,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-08-22 18:04:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:40,576 INFO L225 Difference]: With dead ends: 611 [2020-08-22 18:04:40,576 INFO L226 Difference]: Without dead ends: 490 [2020-08-22 18:04:40,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:04:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-22 18:04:40,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 427. [2020-08-22 18:04:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-08-22 18:04:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 476 transitions. [2020-08-22 18:04:40,743 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 476 transitions. Word has length 163 [2020-08-22 18:04:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:40,744 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 476 transitions. [2020-08-22 18:04:40,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:04:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 476 transitions. [2020-08-22 18:04:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 18:04:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:40,748 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:40,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:04:40,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash -720243162, now seen corresponding path program 1 times [2020-08-22 18:04:40,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:40,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145585971] [2020-08-22 18:04:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:40,753 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,084 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:04:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:04:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 18:04:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:04:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 18:04:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:41,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145585971] [2020-08-22 18:04:41,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:41,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:04:41,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579390748] [2020-08-22 18:04:41,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:04:41,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:41,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:04:41,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:04:41,336 INFO L87 Difference]: Start difference. First operand 427 states and 476 transitions. Second operand 9 states. [2020-08-22 18:04:41,926 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:43,613 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:43,862 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:44,189 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:44,467 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:44,704 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:44,924 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:45,185 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:45,883 INFO L93 Difference]: Finished difference Result 1228 states and 1519 transitions. [2020-08-22 18:04:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:04:45,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-08-22 18:04:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:45,897 INFO L225 Difference]: With dead ends: 1228 [2020-08-22 18:04:45,897 INFO L226 Difference]: Without dead ends: 911 [2020-08-22 18:04:45,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:04:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-22 18:04:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 723. [2020-08-22 18:04:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-08-22 18:04:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 829 transitions. [2020-08-22 18:04:46,211 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 829 transitions. Word has length 171 [2020-08-22 18:04:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:46,212 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 829 transitions. [2020-08-22 18:04:46,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:04:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 829 transitions. [2020-08-22 18:04:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-22 18:04:46,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:46,216 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:46,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:04:46,217 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:46,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2132028994, now seen corresponding path program 1 times [2020-08-22 18:04:46,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:46,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103043190] [2020-08-22 18:04:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:46,220 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,546 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:04:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 18:04:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:04:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:04:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 18:04:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 18:04:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:46,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103043190] [2020-08-22 18:04:46,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:46,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:04:46,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103923283] [2020-08-22 18:04:46,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:04:46,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:46,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:04:46,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:04:46,763 INFO L87 Difference]: Start difference. First operand 723 states and 829 transitions. Second operand 6 states. [2020-08-22 18:04:47,391 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:48,377 INFO L93 Difference]: Finished difference Result 1185 states and 1400 transitions. [2020-08-22 18:04:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 18:04:48,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-08-22 18:04:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:48,385 INFO L225 Difference]: With dead ends: 1185 [2020-08-22 18:04:48,385 INFO L226 Difference]: Without dead ends: 572 [2020-08-22 18:04:48,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:04:48,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-08-22 18:04:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 542. [2020-08-22 18:04:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-08-22 18:04:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 593 transitions. [2020-08-22 18:04:48,663 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 593 transitions. Word has length 181 [2020-08-22 18:04:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:48,664 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 593 transitions. [2020-08-22 18:04:48,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:04:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 593 transitions. [2020-08-22 18:04:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 18:04:48,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:48,668 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:48,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:04:48,668 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:48,669 INFO L82 PathProgramCache]: Analyzing trace with hash 466047794, now seen corresponding path program 1 times [2020-08-22 18:04:48,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:48,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294583798] [2020-08-22 18:04:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:48,673 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:48,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:48,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:49,095 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:04:49,095 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:04:49,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:04:49,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:04:49 BoogieIcfgContainer [2020-08-22 18:04:49,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:04:49,143 INFO L168 Benchmark]: Toolchain (without parser) took 20451.08 ms. Allocated memory was 139.5 MB in the beginning and 597.7 MB in the end (delta: 458.2 MB). Free memory was 102.8 MB in the beginning and 131.3 MB in the end (delta: -28.5 MB). Peak memory consumption was 429.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:49,148 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:04:49,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.13 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 171.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:49,151 INFO L168 Benchmark]: Boogie Preprocessor took 99.82 ms. Allocated memory is still 203.4 MB. Free memory was 171.0 MB in the beginning and 166.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:49,152 INFO L168 Benchmark]: RCFGBuilder took 1201.92 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 166.7 MB in the beginning and 176.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:49,153 INFO L168 Benchmark]: TraceAbstraction took 18559.78 ms. Allocated memory was 237.0 MB in the beginning and 597.7 MB in the end (delta: 360.7 MB). Free memory was 176.1 MB in the beginning and 131.3 MB in the end (delta: 44.8 MB). Peak memory consumption was 405.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:49,165 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 584.13 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 171.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.82 ms. Allocated memory is still 203.4 MB. Free memory was 171.0 MB in the beginning and 166.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1201.92 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 166.7 MB in the beginning and 176.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18559.78 ms. Allocated memory was 237.0 MB in the beginning and 597.7 MB in the end (delta: 360.7 MB). Free memory was 176.1 MB in the beginning and 131.3 MB in the end (delta: 44.8 MB). Peak memory consumption was 405.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L293] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int cleanupTimeShifts = 4; [L594] int waterLevel = 1; [L595] int methaneLevelCritical = 0; [L753] int pumpRunning = 0; [L754] int systemActive = 1; [L568] int retValue_acc ; [L569] int tmp ; [L573] FCALL select_helpers() [L574] FCALL select_features() [L575] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L575] RET, EXPR valid_product() [L575] tmp = valid_product() [L577] COND TRUE \read(tmp) [L579] FCALL setup() [L580] CALL runTest() [L562] CALL test() [L685] int splverifierCounter ; [L686] int tmp ; [L687] int tmp___0 ; [L688] int tmp___1 ; [L689] int tmp___2 ; [L692] splverifierCounter = 0 [L694] COND TRUE 1 [L696] COND TRUE splverifierCounter < 4 [L702] tmp = __VERIFIER_nondet_int() [L704] COND TRUE \read(tmp) [L706] CALL waterRise() [L612] COND TRUE waterLevel < 2 [L613] waterLevel = waterLevel + 1 [L706] RET waterRise() [L712] tmp___0 = __VERIFIER_nondet_int() [L714] COND FALSE !(\read(tmp___0)) [L722] tmp___2 = __VERIFIER_nondet_int() [L724] COND TRUE \read(tmp___2) [L739] CALL timeShift() [L760] COND FALSE !(\read(pumpRunning)) [L767] COND TRUE \read(systemActive) [L769] CALL processEnvironment() [L789] int tmp ; [L792] COND FALSE !(\read(pumpRunning)) [L807] FCALL processEnvironment__wrappee__base() [L769] RET processEnvironment() [L775] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L633] int retValue_acc ; [L636] retValue_acc = methaneLevelCritical [L637] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L665] int retValue_acc ; [L668] retValue_acc = waterLevel [L669] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L841] int retValue_acc ; [L844] retValue_acc = pumpRunning [L845] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 615 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1070 SDtfs, 1799 SDslu, 1318 SDs, 0 SdLazy, 2846 SolverSat, 560 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...