/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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:04:51,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:04:51,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:04:51,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:04:51,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:04:51,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:04:51,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:04:51,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:04:51,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:04:51,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:04:51,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:04:51,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:04:51,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:04:51,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:04:51,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:04:51,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:04:51,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:04:51,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:04:51,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:04:51,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:04:51,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:04:51,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:04:51,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:04:51,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:04:51,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:04:51,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:04:51,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:04:51,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:04:51,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:04:51,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:04:51,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:04:51,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:04:51,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:04:51,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:04:51,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:04:51,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:04:51,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:04:51,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:04:51,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:04:51,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:04:51,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:04:51,439 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 18:04:51,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:04:51,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:04:51,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:04:51,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:04:51,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:04:51,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:04:51,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:04:51,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:04:51,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:04:51,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:04:51,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:04:51,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:04:51,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:04:51,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:04:51,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:04:51,469 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:04:51,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:04:51,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:04:51,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:04:51,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:04:51,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:04:51,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:04:51,472 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:04:51,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:04:51,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:04:51,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:04:51,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:04:51,791 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:04:51,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-08-22 18:04:51,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8baa2857f/35f2a8f1e6564cd99e3c0379ef98cf17/FLAG614506408 [2020-08-22 18:04:52,445 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:04:52,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-08-22 18:04:52,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8baa2857f/35f2a8f1e6564cd99e3c0379ef98cf17/FLAG614506408 [2020-08-22 18:04:52,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8baa2857f/35f2a8f1e6564cd99e3c0379ef98cf17 [2020-08-22 18:04:52,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:04:52,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:04:52,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:52,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:04:52,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:04:52,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:52" (1/1) ... [2020-08-22 18:04:52,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e79316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:52, skipping insertion in model container [2020-08-22 18:04:52,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:52" (1/1) ... [2020-08-22 18:04:52,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:04:52,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:04:53,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:53,328 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:04:53,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:53,447 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:04:53,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53 WrapperNode [2020-08-22 18:04:53,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:53,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:04:53,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:04:53,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:04:53,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (1/1) ... [2020-08-22 18:04:53,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (1/1) ... [2020-08-22 18:04:53,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (1/1) ... [2020-08-22 18:04:53,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (1/1) ... [2020-08-22 18:04:53,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (1/1) ... [2020-08-22 18:04:53,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (1/1) ... [2020-08-22 18:04:53,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (1/1) ... [2020-08-22 18:04:53,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:04:53,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:04:53,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:04:53,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:04:53,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:04:53,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:04:53,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:04:53,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:04:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:04:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:04:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:04:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:04:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:04:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:04:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:04:53,658 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:04:53,658 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:04:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:04:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:04:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:04:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:04:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:04:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 18:04:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:04:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:04:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:04:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:04:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:04:53,663 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:04:53,663 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:04:53,663 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 18:04:53,663 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:04:53,663 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:04:53,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:04:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:04:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:04:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 18:04:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 18:04:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:04:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:04:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:04:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:04:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:04:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:04:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:04:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:04:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:04:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:04:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:04:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:04:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:04:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:04:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:04:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:04:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:04:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:04:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:04:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:04:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:04:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:04:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 18:04:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:04:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:04:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:04:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:04:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:04:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:04:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:04:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:04:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:04:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:04:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:04:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:04:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:04:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:04:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:04:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:04:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:04:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 18:04:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:04:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:04:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 18:04:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 18:04:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:04:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:04:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:04:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:04:55,020 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:04:55,020 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:04:55,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:55 BoogieIcfgContainer [2020-08-22 18:04:55,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:04:55,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:04:55,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:04:55,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:04:55,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:04:52" (1/3) ... [2020-08-22 18:04:55,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49600dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:55, skipping insertion in model container [2020-08-22 18:04:55,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:53" (2/3) ... [2020-08-22 18:04:55,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49600dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:55, skipping insertion in model container [2020-08-22 18:04:55,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:55" (3/3) ... [2020-08-22 18:04:55,037 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c [2020-08-22 18:04:55,048 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:04:55,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:04:55,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:04:55,094 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:04:55,094 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:04:55,094 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:04:55,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:04:55,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:04:55,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:04:55,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:04:55,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:04:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-08-22 18:04:55,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:04:55,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:55,137 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 18:04:55,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash -502047938, now seen corresponding path program 1 times [2020-08-22 18:04:55,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:55,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507508165] [2020-08-22 18:04:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:55,215 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:55,820 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:56,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:56,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:04:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:56,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:56,107 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 18:04:56,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507508165] [2020-08-22 18:04:56,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:56,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:04:56,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033600340] [2020-08-22 18:04:56,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:04:56,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:56,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:04:56,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:56,136 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-08-22 18:04:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:57,444 INFO L93 Difference]: Finished difference Result 444 states and 527 transitions. [2020-08-22 18:04:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:04:57,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:04:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:57,464 INFO L225 Difference]: With dead ends: 444 [2020-08-22 18:04:57,464 INFO L226 Difference]: Without dead ends: 279 [2020-08-22 18:04:57,470 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 18:04:57,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-22 18:04:57,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 239. [2020-08-22 18:04:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-22 18:04:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 257 transitions. [2020-08-22 18:04:57,628 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 257 transitions. Word has length 153 [2020-08-22 18:04:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:57,632 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 257 transitions. [2020-08-22 18:04:57,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:04:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 257 transitions. [2020-08-22 18:04:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:04:57,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:57,644 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 18:04:57,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:04:57,644 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -394974432, now seen corresponding path program 1 times [2020-08-22 18:04:57,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:57,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902857369] [2020-08-22 18:04:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:57,651 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,146 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:04:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:04:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:04:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,227 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 18:04:58,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902857369] [2020-08-22 18:04:58,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:58,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:04:58,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784325046] [2020-08-22 18:04:58,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:04:58,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:58,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:04:58,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:04:58,230 INFO L87 Difference]: Start difference. First operand 239 states and 257 transitions. Second operand 4 states. [2020-08-22 18:04:58,831 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:59,664 INFO L93 Difference]: Finished difference Result 357 states and 398 transitions. [2020-08-22 18:04:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:04:59,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:04:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:59,672 INFO L225 Difference]: With dead ends: 357 [2020-08-22 18:04:59,672 INFO L226 Difference]: Without dead ends: 262 [2020-08-22 18:04:59,674 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 18:04:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-22 18:04:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 229. [2020-08-22 18:04:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-08-22 18:04:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 244 transitions. [2020-08-22 18:04:59,785 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 244 transitions. Word has length 154 [2020-08-22 18:04:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:59,785 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 244 transitions. [2020-08-22 18:04:59,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:04:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 244 transitions. [2020-08-22 18:04:59,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 18:04:59,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:59,788 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] [2020-08-22 18:04:59,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:04:59,789 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:59,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:59,789 INFO L82 PathProgramCache]: Analyzing trace with hash 334647312, now seen corresponding path program 1 times [2020-08-22 18:04:59,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:59,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367295655] [2020-08-22 18:04:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:59,793 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,130 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:05:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:05:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 18:05:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 18:05:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:00,375 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 18:05:00,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367295655] [2020-08-22 18:05:00,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:00,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:05:00,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517055962] [2020-08-22 18:05:00,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:05:00,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:00,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:05:00,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:05:00,381 INFO L87 Difference]: Start difference. First operand 229 states and 244 transitions. Second operand 10 states. [2020-08-22 18:05:01,143 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:01,581 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:05:01,819 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:05:02,086 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:02,363 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:02,597 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:04,041 INFO L93 Difference]: Finished difference Result 403 states and 460 transitions. [2020-08-22 18:05:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:05:04,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-08-22 18:05:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:04,050 INFO L225 Difference]: With dead ends: 403 [2020-08-22 18:05:04,051 INFO L226 Difference]: Without dead ends: 284 [2020-08-22 18:05:04,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 18:05:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-22 18:05:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 229. [2020-08-22 18:05:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-08-22 18:05:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 243 transitions. [2020-08-22 18:05:04,139 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 243 transitions. Word has length 167 [2020-08-22 18:05:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:04,140 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 243 transitions. [2020-08-22 18:05:04,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:05:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 243 transitions. [2020-08-22 18:05:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 18:05:04,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:04,142 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] [2020-08-22 18:05:04,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:05:04,143 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:04,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:04,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1802535089, now seen corresponding path program 1 times [2020-08-22 18:05:04,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:04,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664752208] [2020-08-22 18:05:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:04,147 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,446 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:05:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:05:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:05:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 18:05:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 18:05:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 18:05:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:04,748 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 18:05:04,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664752208] [2020-08-22 18:05:04,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:04,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:05:04,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555782513] [2020-08-22 18:05:04,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:05:04,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:04,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:05:04,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:05:04,752 INFO L87 Difference]: Start difference. First operand 229 states and 243 transitions. Second operand 10 states. [2020-08-22 18:05:05,418 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:06,982 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:07,252 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:07,547 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:07,821 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:08,085 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:08,391 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:08,643 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:09,573 INFO L93 Difference]: Finished difference Result 625 states and 767 transitions. [2020-08-22 18:05:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 18:05:09,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-08-22 18:05:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:09,579 INFO L225 Difference]: With dead ends: 625 [2020-08-22 18:05:09,579 INFO L226 Difference]: Without dead ends: 506 [2020-08-22 18:05:09,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-08-22 18:05:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-22 18:05:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 340. [2020-08-22 18:05:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-08-22 18:05:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 371 transitions. [2020-08-22 18:05:09,707 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 371 transitions. Word has length 175 [2020-08-22 18:05:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:09,707 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 371 transitions. [2020-08-22 18:05:09,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:05:09,708 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 371 transitions. [2020-08-22 18:05:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-22 18:05:09,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:09,711 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, 1, 1, 1, 1] [2020-08-22 18:05:09,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:05:09,711 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:09,712 INFO L82 PathProgramCache]: Analyzing trace with hash -176390763, now seen corresponding path program 1 times [2020-08-22 18:05:09,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:09,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981613919] [2020-08-22 18:05:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:09,715 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:09,992 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:05:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:05:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:05:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:05:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:05:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 18:05:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 18:05:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 18:05:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:10,139 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 18:05:10,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981613919] [2020-08-22 18:05:10,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:10,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 18:05:10,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282761184] [2020-08-22 18:05:10,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 18:05:10,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:10,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 18:05:10,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:05:10,142 INFO L87 Difference]: Start difference. First operand 340 states and 371 transitions. Second operand 7 states. [2020-08-22 18:05:10,587 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:11,458 INFO L93 Difference]: Finished difference Result 562 states and 650 transitions. [2020-08-22 18:05:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:05:11,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-08-22 18:05:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:11,461 INFO L225 Difference]: With dead ends: 562 [2020-08-22 18:05:11,462 INFO L226 Difference]: Without dead ends: 332 [2020-08-22 18:05:11,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:05:11,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-22 18:05:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 266. [2020-08-22 18:05:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-08-22 18:05:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 281 transitions. [2020-08-22 18:05:11,543 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 281 transitions. Word has length 185 [2020-08-22 18:05:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:11,544 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 281 transitions. [2020-08-22 18:05:11,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 18:05:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 281 transitions. [2020-08-22 18:05:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-22 18:05:11,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:11,547 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] [2020-08-22 18:05:11,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:05:11,548 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:11,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:11,548 INFO L82 PathProgramCache]: Analyzing trace with hash 74620443, now seen corresponding path program 1 times [2020-08-22 18:05:11,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:11,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501061128] [2020-08-22 18:05:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:11,551 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:05:11,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:05:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:05:11,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:05:11,828 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:05:11,828 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:05:11,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:05:11,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:05:11 BoogieIcfgContainer [2020-08-22 18:05:11,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:05:11,856 INFO L168 Benchmark]: Toolchain (without parser) took 19070.47 ms. Allocated memory was 146.8 MB in the beginning and 543.2 MB in the end (delta: 396.4 MB). Free memory was 102.7 MB in the beginning and 226.9 MB in the end (delta: -124.2 MB). Peak memory consumption was 272.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:11,857 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:05:11,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.44 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.5 MB in the beginning and 169.1 MB in the end (delta: -66.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:11,858 INFO L168 Benchmark]: Boogie Preprocessor took 117.54 ms. Allocated memory is still 202.4 MB. Free memory was 169.1 MB in the beginning and 165.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:11,859 INFO L168 Benchmark]: RCFGBuilder took 1462.74 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 165.1 MB in the beginning and 174.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:11,860 INFO L168 Benchmark]: TraceAbstraction took 16822.74 ms. Allocated memory was 235.9 MB in the beginning and 543.2 MB in the end (delta: 307.2 MB). Free memory was 172.5 MB in the beginning and 226.9 MB in the end (delta: -54.4 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:11,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.44 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.5 MB in the beginning and 169.1 MB in the end (delta: -66.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.54 ms. Allocated memory is still 202.4 MB. Free memory was 169.1 MB in the beginning and 165.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1462.74 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 165.1 MB in the beginning and 174.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16822.74 ms. Allocated memory was 235.9 MB in the beginning and 543.2 MB in the end (delta: 307.2 MB). Free memory was 172.5 MB in the beginning and 226.9 MB in the end (delta: -54.4 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 643]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L184] int waterLevel = 1; [L185] int methaneLevelCritical = 0; [L442] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L832] int splverifierCounter ; [L833] int tmp ; [L834] int tmp___0 ; [L835] int tmp___1 ; [L836] int tmp___2 ; [L839] splverifierCounter = 0 [L841] COND TRUE 1 [L843] COND TRUE splverifierCounter < 4 [L849] tmp = __VERIFIER_nondet_int() [L851] COND TRUE \read(tmp) [L853] CALL waterRise() [L202] COND TRUE waterLevel < 2 [L203] waterLevel = waterLevel + 1 [L853] RET waterRise() [L859] tmp___0 = __VERIFIER_nondet_int() [L861] COND FALSE !(\read(tmp___0)) [L869] tmp___2 = __VERIFIER_nondet_int() [L871] COND TRUE \read(tmp___2) [L873] CALL startSystem() [L826] systemActive = 1 [L873] RET startSystem() [L886] CALL timeShift() [L660] COND FALSE !(\read(pumpRunning)) [L667] COND TRUE \read(systemActive) [L669] CALL processEnvironment() [L689] int tmp ; [L692] COND FALSE !(\read(pumpRunning)) [L707] FCALL processEnvironment__wrappee__base() [L669] RET processEnvironment() [L675] CALL __utac_acc__Specification3_spec__1() [L899] int tmp ; [L900] int tmp___0 ; [L901] int tmp___1 ; [L905] CALL, EXPR isMethaneLevelCritical() [L223] int retValue_acc ; [L226] retValue_acc = methaneLevelCritical [L227] return (retValue_acc); [L905] RET, EXPR isMethaneLevelCritical() [L905] tmp = isMethaneLevelCritical() [L907] COND FALSE !(\read(tmp)) [L911] CALL, EXPR getWaterLevel() [L255] int retValue_acc ; [L258] retValue_acc = waterLevel [L259] return (retValue_acc); [L911] RET, EXPR getWaterLevel() [L911] tmp___0 = getWaterLevel() [L913] COND TRUE tmp___0 == 2 [L915] CALL, EXPR isPumpRunning() [L759] int retValue_acc ; [L762] retValue_acc = pumpRunning [L763] return (retValue_acc); [L915] RET, EXPR isPumpRunning() [L915] tmp___1 = isPumpRunning() [L917] COND FALSE !(\read(tmp___1)) [L921] CALL __automaton_fail() [L643] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1055 SDtfs, 1932 SDslu, 1370 SDs, 0 SdLazy, 2718 SolverSat, 581 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred 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: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 360 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...