/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_product02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:31:15,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:31:15,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:31:15,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:31:15,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:31:15,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:31:15,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:31:15,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:31:15,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:31:15,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:31:15,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:31:15,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:31:15,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:31:15,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:31:15,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:31:15,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:31:15,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:31:15,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:31:15,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:31:15,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:31:15,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:31:15,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:31:15,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:31:15,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:31:15,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:31:15,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:31:15,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:31:15,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:31:15,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:31:15,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:31:15,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:31:15,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:31:15,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:31:15,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:31:15,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:31:15,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:31:15,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:31:15,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:31:15,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:31:15,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:31:15,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:31:15,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:31:15,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:31:15,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:31:15,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:31:15,448 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:31:15,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:31:15,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:31:15,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:31:15,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:31:15,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:31:15,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:31:15,451 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:31:15,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:31:15,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:31:15,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:31:15,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:31:15,452 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:31:15,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:31:15,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:31:15,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:31:15,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:31:15,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:31:15,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:31:15,455 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:31:15,746 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:31:15,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:31:15,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:31:15,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:31:15,774 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:31:15,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2020-07-07 12:31:15,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243d2654e/78280abfd356421da2f048614b071b1e/FLAG432ed47b5 [2020-07-07 12:31:16,322 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:31:16,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2020-07-07 12:31:16,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243d2654e/78280abfd356421da2f048614b071b1e/FLAG432ed47b5 [2020-07-07 12:31:16,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243d2654e/78280abfd356421da2f048614b071b1e [2020-07-07 12:31:16,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:31:16,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:31:16,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:31:16,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:31:16,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:31:16,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:31:16" (1/1) ... [2020-07-07 12:31:16,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91b316b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:16, skipping insertion in model container [2020-07-07 12:31:16,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:31:16" (1/1) ... [2020-07-07 12:31:16,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:31:16,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:31:17,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:31:17,098 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:31:17,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:31:17,293 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:31:17,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17 WrapperNode [2020-07-07 12:31:17,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:31:17,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:31:17,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:31:17,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:31:17,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (1/1) ... [2020-07-07 12:31:17,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (1/1) ... [2020-07-07 12:31:17,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (1/1) ... [2020-07-07 12:31:17,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (1/1) ... [2020-07-07 12:31:17,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (1/1) ... [2020-07-07 12:31:17,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (1/1) ... [2020-07-07 12:31:17,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (1/1) ... [2020-07-07 12:31:17,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:31:17,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:31:17,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:31:17,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:31:17,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (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 [2020-07-07 12:31:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:31:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:31:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:31:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:31:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:31:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:31:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:31:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:31:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:31:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:31:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:31:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:31:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:31:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:31:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-07-07 12:31:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:31:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:31:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:31:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:31:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:31:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:31:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:31:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:31:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:31:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:31:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:31:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:31:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:31:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:31:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:31:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:31:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:31:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:31:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:31:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:31:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:31:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:31:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:31:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:31:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:31:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:31:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:31:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:31:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:31:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:31:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:31:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:31:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:31:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:31:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:31:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:31:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:31:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:31:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:31:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-07-07 12:31:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:31:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:31:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:31:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:31:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:31:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:31:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:31:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:31:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:31:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:31:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:31:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:31:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:31:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:31:18,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:31:18,496 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:31:18,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:31:18 BoogieIcfgContainer [2020-07-07 12:31:18,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:31:18,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:31:18,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:31:18,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:31:18,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:31:16" (1/3) ... [2020-07-07 12:31:18,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2131d1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:31:18, skipping insertion in model container [2020-07-07 12:31:18,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:31:17" (2/3) ... [2020-07-07 12:31:18,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2131d1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:31:18, skipping insertion in model container [2020-07-07 12:31:18,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:31:18" (3/3) ... [2020-07-07 12:31:18,512 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product02.cil.c [2020-07-07 12:31:18,522 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:31:18,530 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:31:18,543 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:31:18,565 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:31:18,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:31:18,565 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:31:18,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:31:18,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:31:18,566 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:31:18,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:31:18,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:31:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states. [2020-07-07 12:31:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-07 12:31:18,604 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:18,605 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] [2020-07-07 12:31:18,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:18,610 INFO L82 PathProgramCache]: Analyzing trace with hash -96465303, now seen corresponding path program 1 times [2020-07-07 12:31:18,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:18,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249034134] [2020-07-07 12:31:18,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,375 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:19,541 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:19,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249034134] [2020-07-07 12:31:19,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:19,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:31:19,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072340970] [2020-07-07 12:31:19,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:31:19,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:19,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:31:19,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:31:19,569 INFO L87 Difference]: Start difference. First operand 262 states. Second operand 3 states. [2020-07-07 12:31:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:20,748 INFO L93 Difference]: Finished difference Result 374 states and 448 transitions. [2020-07-07 12:31:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:31:20,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-07-07 12:31:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:20,770 INFO L225 Difference]: With dead ends: 374 [2020-07-07 12:31:20,770 INFO L226 Difference]: Without dead ends: 243 [2020-07-07 12:31:20,776 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 [2020-07-07 12:31:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-07-07 12:31:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 205. [2020-07-07 12:31:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-07-07 12:31:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 219 transitions. [2020-07-07 12:31:20,962 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 219 transitions. Word has length 153 [2020-07-07 12:31:20,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:20,963 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 219 transitions. [2020-07-07 12:31:20,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:31:20,963 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 219 transitions. [2020-07-07 12:31:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-07 12:31:20,968 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:20,968 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] [2020-07-07 12:31:20,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:31:20,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:20,970 INFO L82 PathProgramCache]: Analyzing trace with hash -116924770, now seen corresponding path program 1 times [2020-07-07 12:31:20,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:20,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595301506] [2020-07-07 12:31:20,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,368 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:21,469 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:21,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595301506] [2020-07-07 12:31:21,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:21,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:31:21,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133051403] [2020-07-07 12:31:21,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:31:21,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:21,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:31:21,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:31:21,474 INFO L87 Difference]: Start difference. First operand 205 states and 219 transitions. Second operand 4 states. [2020-07-07 12:31:22,074 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:31:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:22,624 INFO L93 Difference]: Finished difference Result 287 states and 319 transitions. [2020-07-07 12:31:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:31:22,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-07-07 12:31:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:22,628 INFO L225 Difference]: With dead ends: 287 [2020-07-07 12:31:22,628 INFO L226 Difference]: Without dead ends: 226 [2020-07-07 12:31:22,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:31:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-07 12:31:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 195. [2020-07-07 12:31:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-07 12:31:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 206 transitions. [2020-07-07 12:31:22,707 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 206 transitions. Word has length 154 [2020-07-07 12:31:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:22,709 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 206 transitions. [2020-07-07 12:31:22,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:31:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 206 transitions. [2020-07-07 12:31:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-07 12:31:22,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:22,718 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] [2020-07-07 12:31:22,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:31:22,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:22,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:22,719 INFO L82 PathProgramCache]: Analyzing trace with hash -529547900, now seen corresponding path program 1 times [2020-07-07 12:31:22,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:22,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709888525] [2020-07-07 12:31:22,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,116 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:23,336 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:23,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709888525] [2020-07-07 12:31:23,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:23,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:31:23,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314223787] [2020-07-07 12:31:23,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:31:23,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:23,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:31:23,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:31:23,342 INFO L87 Difference]: Start difference. First operand 195 states and 206 transitions. Second operand 10 states. [2020-07-07 12:31:23,902 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:31:24,224 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:31:24,456 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:31:24,690 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:24,942 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:31:25,165 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:26,247 INFO L93 Difference]: Finished difference Result 333 states and 381 transitions. [2020-07-07 12:31:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:31:26,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-07-07 12:31:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:26,252 INFO L225 Difference]: With dead ends: 333 [2020-07-07 12:31:26,252 INFO L226 Difference]: Without dead ends: 248 [2020-07-07 12:31:26,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-07-07 12:31:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-07-07 12:31:26,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 195. [2020-07-07 12:31:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-07 12:31:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 205 transitions. [2020-07-07 12:31:26,308 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 205 transitions. Word has length 167 [2020-07-07 12:31:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:26,309 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 205 transitions. [2020-07-07 12:31:26,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:31:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 205 transitions. [2020-07-07 12:31:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-07-07 12:31:26,311 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:26,311 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] [2020-07-07 12:31:26,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:31:26,312 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1664545682, now seen corresponding path program 1 times [2020-07-07 12:31:26,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:26,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552615831] [2020-07-07 12:31:26,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,583 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:31:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:31:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:31:26,784 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:26,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552615831] [2020-07-07 12:31:26,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:31:26,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:31:26,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10229812] [2020-07-07 12:31:26,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:31:26,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:31:26,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:31:26,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:31:26,788 INFO L87 Difference]: Start difference. First operand 195 states and 205 transitions. Second operand 9 states. [2020-07-07 12:31:27,403 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:31:28,734 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:29,006 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:31:29,308 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:29,563 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:31:29,794 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:31:30,042 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:30,265 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:31:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:31:30,758 INFO L93 Difference]: Finished difference Result 425 states and 496 transitions. [2020-07-07 12:31:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 12:31:30,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-07-07 12:31:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:31:30,765 INFO L225 Difference]: With dead ends: 425 [2020-07-07 12:31:30,765 INFO L226 Difference]: Without dead ends: 340 [2020-07-07 12:31:30,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-07-07 12:31:30,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-07-07 12:31:30,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 270. [2020-07-07 12:31:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-07 12:31:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2020-07-07 12:31:30,872 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 170 [2020-07-07 12:31:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:31:30,873 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2020-07-07 12:31:30,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:31:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2020-07-07 12:31:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-07 12:31:30,876 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:31:30,876 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] [2020-07-07 12:31:30,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:31:30,877 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:31:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:31:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1378336310, now seen corresponding path program 1 times [2020-07-07 12:31:30,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:31:30,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796974765] [2020-07-07 12:31:30,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:31:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:31:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:31:31,259 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:31:31,259 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:31:31,260 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:31:31,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:31:31,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:31:31 BoogieIcfgContainer [2020-07-07 12:31:31,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:31:31,298 INFO L168 Benchmark]: Toolchain (without parser) took 14631.46 ms. Allocated memory was 143.7 MB in the beginning and 548.9 MB in the end (delta: 405.3 MB). Free memory was 101.0 MB in the beginning and 379.1 MB in the end (delta: -278.1 MB). Peak memory consumption was 127.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:31,300 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:31:31,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.58 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 172.4 MB in the end (delta: -71.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:31,308 INFO L168 Benchmark]: Boogie Preprocessor took 87.36 ms. Allocated memory is still 200.8 MB. Free memory was 172.4 MB in the beginning and 167.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:31,309 INFO L168 Benchmark]: RCFGBuilder took 1120.05 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 167.8 MB in the beginning and 183.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:31,310 INFO L168 Benchmark]: TraceAbstraction took 12792.39 ms. Allocated memory was 231.2 MB in the beginning and 548.9 MB in the end (delta: 317.7 MB). Free memory was 183.1 MB in the beginning and 379.1 MB in the end (delta: -196.0 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:31:31,322 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 143.7 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 626.58 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 172.4 MB in the end (delta: -71.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.36 ms. Allocated memory is still 200.8 MB. Free memory was 172.4 MB in the beginning and 167.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1120.05 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 167.8 MB in the beginning and 183.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12792.39 ms. Allocated memory was 231.2 MB in the beginning and 548.9 MB in the end (delta: 317.7 MB). Free memory was 183.1 MB in the beginning and 379.1 MB in the end (delta: -196.0 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L256] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L462] int pumpRunning = 0; [L463] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L779] int waterLevel = 1; [L780] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L617] int splverifierCounter ; [L618] int tmp ; [L619] int tmp___0 ; [L620] int tmp___1 ; [L621] int tmp___2 ; [L624] splverifierCounter = 0 [L626] COND TRUE 1 [L628] COND TRUE splverifierCounter < 4 [L634] tmp = __VERIFIER_nondet_int() [L636] COND TRUE \read(tmp) [L638] CALL waterRise() [L797] COND TRUE waterLevel < 2 [L798] waterLevel = waterLevel + 1 [L638] RET waterRise() [L644] tmp___0 = __VERIFIER_nondet_int() [L646] COND FALSE !(\read(tmp___0)) [L654] tmp___2 = __VERIFIER_nondet_int() [L656] COND TRUE \read(tmp___2) [L658] CALL startSystem() [L573] systemActive = 1 [L658] RET startSystem() [L671] CALL timeShift() [L470] COND FALSE !(\read(pumpRunning)) [L477] COND TRUE \read(systemActive) [L479] FCALL processEnvironment() [L485] CALL __utac_acc__Specification3_spec__1() [L580] int tmp ; [L581] int tmp___0 ; [L582] int tmp___1 ; [L586] CALL, EXPR isMethaneLevelCritical() [L818] int retValue_acc ; [L821] retValue_acc = methaneLevelCritical [L822] return (retValue_acc); [L586] RET, EXPR isMethaneLevelCritical() [L586] tmp = isMethaneLevelCritical() [L588] COND FALSE !(\read(tmp)) [L592] CALL, EXPR getWaterLevel() [L850] int retValue_acc ; [L853] retValue_acc = waterLevel [L854] return (retValue_acc); [L592] RET, EXPR getWaterLevel() [L592] tmp___0 = getWaterLevel() [L594] COND TRUE tmp___0 == 2 [L596] CALL, EXPR isPumpRunning() [L525] int retValue_acc ; [L528] retValue_acc = pumpRunning [L529] return (retValue_acc); [L596] RET, EXPR isPumpRunning() [L596] tmp___1 = isPumpRunning() [L598] COND FALSE !(\read(tmp___1)) [L602] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 582 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 756 SDtfs, 940 SDslu, 1236 SDs, 0 SdLazy, 1846 SolverSat, 279 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred 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: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 192 StatesRemovedByMinimization, 4 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...