/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:28:32,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:28:32,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:28:32,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:28:32,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:28:32,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:28:32,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:28:32,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:28:32,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:28:32,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:28:32,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:28:32,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:28:32,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:28:32,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:28:32,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:28:32,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:28:32,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:28:32,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:28:32,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:28:32,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:28:32,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:28:32,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:28:32,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:28:32,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:28:32,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:28:32,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:28:32,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:28:32,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:28:32,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:28:32,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:28:32,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:28:32,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:28:32,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:28:32,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:28:32,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:28:32,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:28:32,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:28:32,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:28:32,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:28:32,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:28:32,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:28:32,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:28:32,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:28:32,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:28:32,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:28:32,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:28:32,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:28:32,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:28:32,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:28:32,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:28:32,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:28:32,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:28:32,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:28:32,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:28:32,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:28:32,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:28:32,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:28:32,603 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:28:32,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:28:32,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:28:32,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:28:32,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:28:32,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:28:32,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:28:32,605 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:28:32,606 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:28:32,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:28:33,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:28:33,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:28:33,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:28:33,007 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:28:33,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2021-02-24 03:28:33,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d8d35f41/4390aa7aac504b9894cc6f41678672cd/FLAGfe216aad6 [2021-02-24 03:28:33,785 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:28:33,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2021-02-24 03:28:33,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d8d35f41/4390aa7aac504b9894cc6f41678672cd/FLAGfe216aad6 [2021-02-24 03:28:34,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d8d35f41/4390aa7aac504b9894cc6f41678672cd [2021-02-24 03:28:34,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:28:34,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:28:34,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:28:34,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:28:34,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:28:34,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e9c14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34, skipping insertion in model container [2021-02-24 03:28:34,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:28:34,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:28:34,422 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c[5284,5297] [2021-02-24 03:28:34,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:28:34,588 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:28:34,647 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c[5284,5297] [2021-02-24 03:28:34,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:28:34,745 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:28:34,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34 WrapperNode [2021-02-24 03:28:34,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:28:34,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:28:34,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:28:34,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:28:34,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (1/1) ... [2021-02-24 03:28:34,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:28:34,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:28:34,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:28:34,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:28:34,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (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 [2021-02-24 03:28:35,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:28:35,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:28:35,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:28:35,003 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:28:35,003 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:28:35,003 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:28:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:28:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:28:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-24 03:28:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:28:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:28:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:28:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:28:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:28:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:28:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:28:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:28:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:28:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:28:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:28:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:28:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:28:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:28:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:28:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:28:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:28:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:28:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:28:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:28:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:28:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:28:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:28:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:28:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:28:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:28:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:28:35,008 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:28:35,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:28:35,009 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:28:35,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:28:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:28:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:28:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:28:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:28:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:28:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:28:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:28:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:28:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:28:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:28:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:28:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:28:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:28:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:28:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:28:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:28:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:28:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:28:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:28:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:28:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:28:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:28:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:28:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:28:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-24 03:28:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:28:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:28:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:28:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:28:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:28:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:28:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:28:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:28:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:28:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:28:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:28:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:28:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:28:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:28:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:28:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:28:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:28:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:28:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:28:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:28:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:28:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:28:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:28:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:28:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:28:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:28:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:28:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:28:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:28:36,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:28:36,278 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:28:36,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:28:36 BoogieIcfgContainer [2021-02-24 03:28:36,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:28:36,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:28:36,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:28:36,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:28:36,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:28:34" (1/3) ... [2021-02-24 03:28:36,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2445cc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:28:36, skipping insertion in model container [2021-02-24 03:28:36,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:34" (2/3) ... [2021-02-24 03:28:36,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2445cc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:28:36, skipping insertion in model container [2021-02-24 03:28:36,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:28:36" (3/3) ... [2021-02-24 03:28:36,294 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product27.cil.c [2021-02-24 03:28:36,302 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:28:36,308 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:28:36,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:28:36,367 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:28:36,367 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:28:36,368 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:28:36,368 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:28:36,369 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:28:36,369 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:28:36,369 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:28:36,370 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:28:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2021-02-24 03:28:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:28:36,437 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:36,438 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] [2021-02-24 03:28:36,439 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:36,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:36,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1064075959, now seen corresponding path program 1 times [2021-02-24 03:28:36,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:36,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769713845] [2021-02-24 03:28:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:36,548 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,340 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:37,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:28:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:28:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:28:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:37,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:37,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:37,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769713845] [2021-02-24 03:28:37,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:37,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:28:37,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523254414] [2021-02-24 03:28:37,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:28:37,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:37,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:28:37,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:28:37,637 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 3 states. [2021-02-24 03:28:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:39,132 INFO L93 Difference]: Finished difference Result 455 states and 542 transitions. [2021-02-24 03:28:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:28:39,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:28:39,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:39,150 INFO L225 Difference]: With dead ends: 455 [2021-02-24 03:28:39,150 INFO L226 Difference]: Without dead ends: 287 [2021-02-24 03:28:39,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:28:39,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-24 03:28:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 246. [2021-02-24 03:28:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-02-24 03:28:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 266 transitions. [2021-02-24 03:28:39,316 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 266 transitions. Word has length 158 [2021-02-24 03:28:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:39,317 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 266 transitions. [2021-02-24 03:28:39,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:28:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 266 transitions. [2021-02-24 03:28:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:28:39,321 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:39,322 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] [2021-02-24 03:28:39,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:28:39,322 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:39,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1275124268, now seen corresponding path program 1 times [2021-02-24 03:28:39,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:39,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30929349] [2021-02-24 03:28:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:39,345 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:39,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,790 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:39,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:28:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:28:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:28:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:39,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:39,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:39,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30929349] [2021-02-24 03:28:39,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:39,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:28:39,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374306535] [2021-02-24 03:28:39,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:28:39,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:39,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:28:39,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:28:39,904 INFO L87 Difference]: Start difference. First operand 246 states and 266 transitions. Second operand 4 states. [2021-02-24 03:28:40,646 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:28:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:41,591 INFO L93 Difference]: Finished difference Result 365 states and 408 transitions. [2021-02-24 03:28:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:28:41,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:28:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:41,596 INFO L225 Difference]: With dead ends: 365 [2021-02-24 03:28:41,596 INFO L226 Difference]: Without dead ends: 270 [2021-02-24 03:28:41,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:28:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-24 03:28:41,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 236. [2021-02-24 03:28:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-24 03:28:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 253 transitions. [2021-02-24 03:28:41,685 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 253 transitions. Word has length 159 [2021-02-24 03:28:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:41,686 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 253 transitions. [2021-02-24 03:28:41,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:28:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 253 transitions. [2021-02-24 03:28:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-24 03:28:41,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:41,689 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] [2021-02-24 03:28:41,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:28:41,690 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:41,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:41,690 INFO L82 PathProgramCache]: Analyzing trace with hash -699960703, now seen corresponding path program 1 times [2021-02-24 03:28:41,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:41,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864249017] [2021-02-24 03:28:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:41,694 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:41,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:41,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:41,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:41,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:41,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:28:41,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:28:41,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:28:41,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:41,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,254 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:28:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:28:42,423 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:28:42,424 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:28:42,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:28:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:28:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-24 03:28:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:42,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:42,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:42,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864249017] [2021-02-24 03:28:42,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:42,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:28:42,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26654751] [2021-02-24 03:28:42,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:28:42,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:28:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:28:42,536 INFO L87 Difference]: Start difference. First operand 236 states and 253 transitions. Second operand 9 states. [2021-02-24 03:28:43,290 WARN L202 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:43,712 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:28:44,076 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:28:44,433 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:44,799 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:45,169 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:46,253 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:28:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:48,209 INFO L93 Difference]: Finished difference Result 616 states and 706 transitions. [2021-02-24 03:28:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:28:48,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-24 03:28:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:48,216 INFO L225 Difference]: With dead ends: 616 [2021-02-24 03:28:48,216 INFO L226 Difference]: Without dead ends: 495 [2021-02-24 03:28:48,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:28:48,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-02-24 03:28:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 432. [2021-02-24 03:28:48,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2021-02-24 03:28:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 481 transitions. [2021-02-24 03:28:48,408 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 481 transitions. Word has length 168 [2021-02-24 03:28:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:48,409 INFO L480 AbstractCegarLoop]: Abstraction has 432 states and 481 transitions. [2021-02-24 03:28:48,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:28:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 481 transitions. [2021-02-24 03:28:48,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-24 03:28:48,413 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:48,413 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] [2021-02-24 03:28:48,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:28:48,413 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:48,414 INFO L82 PathProgramCache]: Analyzing trace with hash -541317364, now seen corresponding path program 1 times [2021-02-24 03:28:48,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:48,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151634918] [2021-02-24 03:28:48,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:48,418 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,822 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:48,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:28:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-24 03:28:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:28:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-24 03:28:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-24 03:28:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:48,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-24 03:28:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:48,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:48,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:49,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151634918] [2021-02-24 03:28:49,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:49,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:28:49,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793127522] [2021-02-24 03:28:49,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:28:49,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:49,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:28:49,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:28:49,014 INFO L87 Difference]: Start difference. First operand 432 states and 481 transitions. Second operand 9 states. [2021-02-24 03:28:49,548 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:51,667 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:52,040 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:52,484 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:52,875 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:53,229 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:53,624 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:53,973 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:54,705 INFO L93 Difference]: Finished difference Result 1233 states and 1524 transitions. [2021-02-24 03:28:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:28:54,706 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-24 03:28:54,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:54,715 INFO L225 Difference]: With dead ends: 1233 [2021-02-24 03:28:54,715 INFO L226 Difference]: Without dead ends: 916 [2021-02-24 03:28:54,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-24 03:28:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-02-24 03:28:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 728. [2021-02-24 03:28:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2021-02-24 03:28:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 834 transitions. [2021-02-24 03:28:55,064 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 834 transitions. Word has length 176 [2021-02-24 03:28:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:55,064 INFO L480 AbstractCegarLoop]: Abstraction has 728 states and 834 transitions. [2021-02-24 03:28:55,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:28:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 834 transitions. [2021-02-24 03:28:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-24 03:28:55,070 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:55,070 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] [2021-02-24 03:28:55,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:28:55,071 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:55,071 INFO L82 PathProgramCache]: Analyzing trace with hash -482503353, now seen corresponding path program 1 times [2021-02-24 03:28:55,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:55,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077555] [2021-02-24 03:28:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:55,075 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:55,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:55,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:55,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:55,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:55,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,435 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:55,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:55,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-24 03:28:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:28:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:28:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:28:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-24 03:28:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-02-24 03:28:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:55,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077555] [2021-02-24 03:28:55,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:55,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:28:55,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419779941] [2021-02-24 03:28:55,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:28:55,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:55,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:28:55,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:28:55,584 INFO L87 Difference]: Start difference. First operand 728 states and 834 transitions. Second operand 6 states. [2021-02-24 03:28:56,171 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:57,107 INFO L93 Difference]: Finished difference Result 1190 states and 1405 transitions. [2021-02-24 03:28:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 03:28:57,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2021-02-24 03:28:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:57,111 INFO L225 Difference]: With dead ends: 1190 [2021-02-24 03:28:57,111 INFO L226 Difference]: Without dead ends: 577 [2021-02-24 03:28:57,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:28:57,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-02-24 03:28:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 547. [2021-02-24 03:28:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2021-02-24 03:28:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 598 transitions. [2021-02-24 03:28:57,340 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 598 transitions. Word has length 181 [2021-02-24 03:28:57,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:57,341 INFO L480 AbstractCegarLoop]: Abstraction has 547 states and 598 transitions. [2021-02-24 03:28:57,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:28:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 598 transitions. [2021-02-24 03:28:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-24 03:28:57,344 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:57,344 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] [2021-02-24 03:28:57,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:28:57,345 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:57,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:57,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1868499445, now seen corresponding path program 1 times [2021-02-24 03:28:57,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:57,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554532570] [2021-02-24 03:28:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:57,349 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:28:57,428 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:28:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:28:57,503 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:28:57,703 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:28:57,703 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:28:57,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:28:57,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:28:57 BoogieIcfgContainer [2021-02-24 03:28:57,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:28:57,728 INFO L168 Benchmark]: Toolchain (without parser) took 23632.77 ms. Allocated memory was 151.0 MB in the beginning and 536.9 MB in the end (delta: 385.9 MB). Free memory was 126.9 MB in the beginning and 390.2 MB in the end (delta: -263.3 MB). Peak memory consumption was 123.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:57,729 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.2 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:28:57,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:57,730 INFO L168 Benchmark]: Boogie Preprocessor took 141.12 ms. Allocated memory is still 151.0 MB. Free memory was 104.8 MB in the beginning and 132.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:57,730 INFO L168 Benchmark]: RCFGBuilder took 1394.32 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 98.0 MB in the end (delta: 34.1 MB). Peak memory consumption was 75.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:57,731 INFO L168 Benchmark]: TraceAbstraction took 21441.33 ms. Allocated memory was 151.0 MB in the beginning and 536.9 MB in the end (delta: 385.9 MB). Free memory was 97.5 MB in the beginning and 390.2 MB in the end (delta: -292.7 MB). Peak memory consumption was 92.7 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:57,733 INFO L339 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 151.0 MB. Free memory was 124.2 MB in the beginning and 124.2 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 630.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 141.12 ms. Allocated memory is still 151.0 MB. Free memory was 104.8 MB in the beginning and 132.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1394.32 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 98.0 MB in the end (delta: 34.1 MB). Peak memory consumption was 75.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21441.33 ms. Allocated memory was 151.0 MB in the beginning and 536.9 MB in the end (delta: 385.9 MB). Free memory was 97.5 MB in the beginning and 390.2 MB in the end (delta: -292.7 MB). Peak memory consumption was 92.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 348]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L560] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L757] int waterLevel = 1; [L758] int methaneLevelCritical = 0; [L846] int cleanupTimeShifts = 4; [L919] int retValue_acc ; [L920] int tmp ; [L924] FCALL select_helpers() [L925] FCALL select_features() [L926] CALL, EXPR valid_product() [L382] int retValue_acc ; [L385] retValue_acc = 1 [L386] return (retValue_acc); [L926] RET, EXPR valid_product() [L926] tmp = valid_product() [L928] COND TRUE \read(tmp) [L930] FCALL setup() [L931] CALL runTest() [L913] CALL test() [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) [L69] CALL waterRise() [L775] COND TRUE waterLevel < 2 [L776] waterLevel = waterLevel + 1 [L69] RET waterRise() [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L102] CALL timeShift() [L130] COND FALSE !(\read(pumpRunning)) [L137] COND TRUE \read(systemActive) [L139] CALL processEnvironment() [L159] int tmp ; [L162] COND FALSE !(\read(pumpRunning)) [L177] FCALL processEnvironment__wrappee__base() [L139] RET processEnvironment() [L145] CALL __utac_acc__Specification3_spec__1() [L311] int tmp ; [L312] int tmp___0 ; [L313] int tmp___1 ; [L317] CALL, EXPR isMethaneLevelCritical() [L796] int retValue_acc ; [L799] retValue_acc = methaneLevelCritical [L800] return (retValue_acc); [L317] RET, EXPR isMethaneLevelCritical() [L317] tmp = isMethaneLevelCritical() [L319] COND FALSE !(\read(tmp)) [L323] CALL, EXPR getWaterLevel() [L828] int retValue_acc ; [L831] retValue_acc = waterLevel [L832] return (retValue_acc); [L323] RET, EXPR getWaterLevel() [L323] tmp___0 = getWaterLevel() [L325] COND TRUE tmp___0 == 2 [L327] CALL, EXPR isPumpRunning() [L229] int retValue_acc ; [L232] retValue_acc = pumpRunning [L233] return (retValue_acc); [L327] RET, EXPR isPumpRunning() [L327] tmp___1 = isPumpRunning() [L329] COND FALSE !(\read(tmp___1)) [L333] CALL __automaton_fail() [L348] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 633 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1095 SDtfs, 1810 SDslu, 1378 SDs, 0 SdLazy, 2870 SolverSat, 572 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...