/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:22:18,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:22:18,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:22:18,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:22:18,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:22:18,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:22:18,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:22:18,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:22:18,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:22:18,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:22:18,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:22:18,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:22:18,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:22:18,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:22:18,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:22:18,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:22:18,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:22:18,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:22:18,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:22:18,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:22:18,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:22:18,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:22:18,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:22:18,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:22:18,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:22:18,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:22:18,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:22:18,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:22:18,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:22:18,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:22:18,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:22:18,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:22:18,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:22:18,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:22:18,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:22:18,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:22:18,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:22:18,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:22:18,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:22:18,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:22:18,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:22:18,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:22:18,725 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:22:18,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:22:18,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:22:18,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:22:18,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:22:18,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:22:18,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:22:18,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:22:18,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:22:18,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:22:18,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:22:18,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:22:18,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:22:18,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:22:18,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:22:18,731 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:22:18,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:22:18,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:22:18,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:22:18,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:22:18,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:22:18,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:22:18,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:22:19,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:22:19,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:22:19,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:22:19,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:22:19,147 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:22:19,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c [2021-02-23 16:22:19,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba71ffa07/490bae44aa504f10a87d6291ec984a97/FLAG1fb8011b2 [2021-02-23 16:22:19,883 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:22:19,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c [2021-02-23 16:22:19,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba71ffa07/490bae44aa504f10a87d6291ec984a97/FLAG1fb8011b2 [2021-02-23 16:22:20,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba71ffa07/490bae44aa504f10a87d6291ec984a97 [2021-02-23 16:22:20,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:22:20,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:22:20,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:22:20,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:22:20,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:22:20,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157bfd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20, skipping insertion in model container [2021-02-23 16:22:20,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:22:20,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:22:20,576 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_product10.cil.c[3019,3032] [2021-02-23 16:22:20,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:22:20,710 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:22:20,735 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_product10.cil.c[3019,3032] [2021-02-23 16:22:20,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:22:20,818 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:22:20,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20 WrapperNode [2021-02-23 16:22:20,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:22:20,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:22:20,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:22:20,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:22:20,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (1/1) ... [2021-02-23 16:22:20,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:22:20,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:22:20,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:22:20,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:22:20,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (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 [2021-02-23 16:22:21,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:22:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:22:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:22:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:22:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:22:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:22:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:22:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:22:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:22:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:22:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:22:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:22:21,052 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:22:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:22:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:22:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:22:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:22:21,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:22:21,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:22:21,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:22:21,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:22:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:22:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:22:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:22:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:22:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:22:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:22:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:22:21,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:22:21,075 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:22:21,078 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:22:21,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:22:21,078 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:22:21,078 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:22:21,079 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:22:21,079 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:22:21,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:22:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:22:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:22:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:22:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:22:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:22:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:22:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:22:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:22:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:22:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:22:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:22:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:22:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:22:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:22:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:22:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:22:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:22:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:22:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:22:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:22:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:22:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:22:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:22:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:22:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:22:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:22:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:22:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:22:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:22:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:22:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:22:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:22:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:22:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:22:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:22:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:22:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:22:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:22:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:22:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:22:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:22:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:22:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:22:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:22:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:22:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:22:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:22:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:22:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:22:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:22:21,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:22:22,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:22:22,200 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:22:22,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:22:22 BoogieIcfgContainer [2021-02-23 16:22:22,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:22:22,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:22:22,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:22:22,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:22:22,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:22:20" (1/3) ... [2021-02-23 16:22:22,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e329a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:22:22, skipping insertion in model container [2021-02-23 16:22:22,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:20" (2/3) ... [2021-02-23 16:22:22,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e329a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:22:22, skipping insertion in model container [2021-02-23 16:22:22,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:22:22" (3/3) ... [2021-02-23 16:22:22,212 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product10.cil.c [2021-02-23 16:22:22,219 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:22:22,224 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:22:22,244 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:22:22,268 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:22:22,269 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:22:22,269 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:22:22,269 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:22:22,269 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:22:22,269 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:22:22,270 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:22:22,270 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:22:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states. [2021-02-23 16:22:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:22:22,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:22,313 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] [2021-02-23 16:22:22,313 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:22,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1515267136, now seen corresponding path program 1 times [2021-02-23 16:22:22,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:22,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832197280] [2021-02-23 16:22:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:22,408 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:22,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:22,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:22,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:22,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,114 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:22:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:22:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:22:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:23,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832197280] [2021-02-23 16:22:23,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:23,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:22:23,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926432210] [2021-02-23 16:22:23,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:22:23,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:23,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:22:23,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:22:23,339 INFO L87 Difference]: Start difference. First operand 278 states. Second operand 3 states. [2021-02-23 16:22:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:24,581 INFO L93 Difference]: Finished difference Result 380 states and 454 transitions. [2021-02-23 16:22:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:22:24,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:22:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:24,599 INFO L225 Difference]: With dead ends: 380 [2021-02-23 16:22:24,599 INFO L226 Difference]: Without dead ends: 248 [2021-02-23 16:22:24,604 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 [2021-02-23 16:22:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-02-23 16:22:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 210. [2021-02-23 16:22:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-02-23 16:22:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 224 transitions. [2021-02-23 16:22:24,755 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 224 transitions. Word has length 158 [2021-02-23 16:22:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:24,756 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 224 transitions. [2021-02-23 16:22:24,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:22:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 224 transitions. [2021-02-23 16:22:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:22:24,761 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:24,761 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] [2021-02-23 16:22:24,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:22:24,762 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:24,763 INFO L82 PathProgramCache]: Analyzing trace with hash 504407249, now seen corresponding path program 1 times [2021-02-23 16:22:24,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:24,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311592322] [2021-02-23 16:22:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:24,767 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:24,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,120 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:25,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:25,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:25,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:25,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:25,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:25,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:25,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:25,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:25,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:25,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:25,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:22:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:25,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:25,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:22:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:25,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:25,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:22:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:25,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:25,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:25,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311592322] [2021-02-23 16:22:25,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:25,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:22:25,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563621931] [2021-02-23 16:22:25,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:22:25,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:25,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:22:25,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:22:25,291 INFO L87 Difference]: Start difference. First operand 210 states and 224 transitions. Second operand 4 states. [2021-02-23 16:22:25,928 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:22:26,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:26,483 INFO L93 Difference]: Finished difference Result 292 states and 324 transitions. [2021-02-23 16:22:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:22:26,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:22:26,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:26,487 INFO L225 Difference]: With dead ends: 292 [2021-02-23 16:22:26,487 INFO L226 Difference]: Without dead ends: 231 [2021-02-23 16:22:26,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:22:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-02-23 16:22:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 200. [2021-02-23 16:22:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-02-23 16:22:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 211 transitions. [2021-02-23 16:22:26,565 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 211 transitions. Word has length 159 [2021-02-23 16:22:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:26,566 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 211 transitions. [2021-02-23 16:22:26,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:22:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 211 transitions. [2021-02-23 16:22:26,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:22:26,569 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:26,569 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] [2021-02-23 16:22:26,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:22:26,569 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:26,570 INFO L82 PathProgramCache]: Analyzing trace with hash -15522646, now seen corresponding path program 1 times [2021-02-23 16:22:26,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:26,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422665717] [2021-02-23 16:22:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:26,574 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:26,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:26,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:26,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:26,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:26,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:26,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:26,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:26,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:26,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:26,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:22:26,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:26,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:26,966 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:27,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:27,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:22:27,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:22:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:27,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:22:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:22:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:22:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:22:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:27,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:27,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:27,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422665717] [2021-02-23 16:22:27,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:27,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:22:27,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641243445] [2021-02-23 16:22:27,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:22:27,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:27,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:22:27,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:22:27,226 INFO L87 Difference]: Start difference. First operand 200 states and 211 transitions. Second operand 10 states. [2021-02-23 16:22:27,791 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:28,113 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:22:28,401 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:22:28,717 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:29,030 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:29,325 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:30,378 INFO L93 Difference]: Finished difference Result 338 states and 386 transitions. [2021-02-23 16:22:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:22:30,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:22:30,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:30,388 INFO L225 Difference]: With dead ends: 338 [2021-02-23 16:22:30,388 INFO L226 Difference]: Without dead ends: 253 [2021-02-23 16:22:30,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:22:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-23 16:22:30,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 200. [2021-02-23 16:22:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-02-23 16:22:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 210 transitions. [2021-02-23 16:22:30,478 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 210 transitions. Word has length 172 [2021-02-23 16:22:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:30,479 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 210 transitions. [2021-02-23 16:22:30,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:22:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 210 transitions. [2021-02-23 16:22:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-23 16:22:30,482 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:30,482 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] [2021-02-23 16:22:30,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:22:30,482 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash 460964760, now seen corresponding path program 1 times [2021-02-23 16:22:30,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:30,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287919098] [2021-02-23 16:22:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:30,487 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,840 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:30,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:22:30,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:22:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:22:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:22:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:22:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 16:22:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:30,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:30,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:31,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287919098] [2021-02-23 16:22:31,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:31,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:22:31,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037391681] [2021-02-23 16:22:31,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:22:31,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:31,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:22:31,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:22:31,006 INFO L87 Difference]: Start difference. First operand 200 states and 210 transitions. Second operand 9 states. [2021-02-23 16:22:31,607 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:32,776 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:33,133 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:33,468 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:33,781 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:34,085 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:34,407 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:34,692 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:35,095 INFO L93 Difference]: Finished difference Result 430 states and 501 transitions. [2021-02-23 16:22:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:22:35,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2021-02-23 16:22:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:35,099 INFO L225 Difference]: With dead ends: 430 [2021-02-23 16:22:35,099 INFO L226 Difference]: Without dead ends: 345 [2021-02-23 16:22:35,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:22:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-02-23 16:22:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 275. [2021-02-23 16:22:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2021-02-23 16:22:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 297 transitions. [2021-02-23 16:22:35,206 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 297 transitions. Word has length 175 [2021-02-23 16:22:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:35,207 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 297 transitions. [2021-02-23 16:22:35,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:22:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 297 transitions. [2021-02-23 16:22:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-23 16:22:35,212 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:35,213 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] [2021-02-23 16:22:35,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:22:35,213 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:35,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:35,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1456520223, now seen corresponding path program 1 times [2021-02-23 16:22:35,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:35,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796110858] [2021-02-23 16:22:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:35,220 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:35,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,493 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:35,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:22:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:22:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:22:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:22:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:22:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-23 16:22:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:35,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:35,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:35,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796110858] [2021-02-23 16:22:35,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:35,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:22:35,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991970902] [2021-02-23 16:22:35,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:22:35,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:35,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:22:35,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:22:35,656 INFO L87 Difference]: Start difference. First operand 275 states and 297 transitions. Second operand 6 states. [2021-02-23 16:22:36,165 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:36,937 INFO L93 Difference]: Finished difference Result 423 states and 485 transitions. [2021-02-23 16:22:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:22:36,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2021-02-23 16:22:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:36,940 INFO L225 Difference]: With dead ends: 423 [2021-02-23 16:22:36,941 INFO L226 Difference]: Without dead ends: 327 [2021-02-23 16:22:36,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:22:36,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-02-23 16:22:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 261. [2021-02-23 16:22:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-02-23 16:22:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 276 transitions. [2021-02-23 16:22:37,042 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 276 transitions. Word has length 180 [2021-02-23 16:22:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:37,043 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 276 transitions. [2021-02-23 16:22:37,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:22:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 276 transitions. [2021-02-23 16:22:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-23 16:22:37,045 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:37,046 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] [2021-02-23 16:22:37,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:22:37,046 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:37,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:37,047 INFO L82 PathProgramCache]: Analyzing trace with hash 456942003, now seen corresponding path program 1 times [2021-02-23 16:22:37,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:37,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711053198] [2021-02-23 16:22:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:37,050 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:22:37,124 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:22:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:22:37,196 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:22:37,379 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:22:37,379 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:22:37,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:22:37,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:22:37 BoogieIcfgContainer [2021-02-23 16:22:37,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:22:37,404 INFO L168 Benchmark]: Toolchain (without parser) took 17175.57 ms. Allocated memory was 152.0 MB in the beginning and 407.9 MB in the end (delta: 255.9 MB). Free memory was 126.8 MB in the beginning and 185.0 MB in the end (delta: -58.1 MB). Peak memory consumption was 199.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:37,404 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:22:37,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.11 ms. Allocated memory is still 152.0 MB. Free memory was 125.7 MB in the beginning and 106.0 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:37,405 INFO L168 Benchmark]: Boogie Preprocessor took 115.71 ms. Allocated memory is still 152.0 MB. Free memory was 106.0 MB in the beginning and 102.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:37,406 INFO L168 Benchmark]: RCFGBuilder took 1266.09 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 102.1 MB in the beginning and 149.8 MB in the end (delta: -47.7 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:37,406 INFO L168 Benchmark]: TraceAbstraction took 15198.16 ms. Allocated memory was 184.5 MB in the beginning and 407.9 MB in the end (delta: 223.3 MB). Free memory was 149.3 MB in the beginning and 185.0 MB in the end (delta: -35.7 MB). Peak memory consumption was 188.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:37,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 574.11 ms. Allocated memory is still 152.0 MB. Free memory was 125.7 MB in the beginning and 106.0 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.71 ms. Allocated memory is still 152.0 MB. Free memory was 106.0 MB in the beginning and 102.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1266.09 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 102.1 MB in the beginning and 149.8 MB in the end (delta: -47.7 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15198.16 ms. Allocated memory was 184.5 MB in the beginning and 407.9 MB in the end (delta: 223.3 MB). Free memory was 149.3 MB in the beginning and 185.0 MB in the end (delta: -35.7 MB). Peak memory consumption was 188.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 170]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L615] int pumpRunning = 0; [L616] int systemActive = 1; [L783] int cleanupTimeShifts = 4; [L856] int retValue_acc ; [L857] int tmp ; [L861] FCALL select_helpers() [L862] FCALL select_features() [L863] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L863] RET, EXPR valid_product() [L863] tmp = valid_product() [L865] COND TRUE \read(tmp) [L867] FCALL setup() [L868] CALL runTest() [L850] CALL test() [L545] int splverifierCounter ; [L546] int tmp ; [L547] int tmp___0 ; [L548] int tmp___1 ; [L549] int tmp___2 ; [L552] splverifierCounter = 0 [L554] COND TRUE 1 [L556] COND TRUE splverifierCounter < 4 [L562] tmp = __VERIFIER_nondet_int() [L564] COND TRUE \read(tmp) [L566] CALL waterRise() [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 [L566] RET waterRise() [L572] tmp___0 = __VERIFIER_nondet_int() [L574] COND FALSE !(\read(tmp___0)) [L582] tmp___2 = __VERIFIER_nondet_int() [L584] COND TRUE \read(tmp___2) [L586] CALL startSystem() [L744] systemActive = 1 [L586] RET startSystem() [L599] CALL timeShift() [L623] COND FALSE !(\read(pumpRunning)) [L630] COND TRUE \read(systemActive) [L632] FCALL processEnvironment() [L638] CALL __utac_acc__Specification3_spec__1() [L750] int tmp ; [L751] int tmp___0 ; [L752] int tmp___1 ; [L756] CALL, EXPR isMethaneLevelCritical() [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L756] RET, EXPR isMethaneLevelCritical() [L756] tmp = isMethaneLevelCritical() [L758] COND FALSE !(\read(tmp)) [L762] CALL, EXPR getWaterLevel() [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L762] RET, EXPR getWaterLevel() [L762] tmp___0 = getWaterLevel() [L764] COND TRUE tmp___0 == 2 [L766] CALL, EXPR isPumpRunning() [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); [L766] RET, EXPR isPumpRunning() [L766] tmp___1 = isPumpRunning() [L768] COND FALSE !(\read(tmp___1)) [L772] CALL __automaton_fail() [L170] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 600 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 960 SDtfs, 1385 SDslu, 1355 SDs, 0 SdLazy, 2115 SolverSat, 395 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 258 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...