/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_product02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:54:38,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:54:38,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:54:38,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:54:38,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:54:38,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:54:38,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:54:38,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:54:38,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:54:38,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:54:38,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:54:38,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:54:38,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:54:38,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:54:38,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:54:38,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:54:38,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:54:38,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:54:38,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:54:38,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:54:38,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:54:38,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:54:38,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:54:38,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:54:38,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:54:38,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:54:38,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:54:38,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:54:39,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:54:39,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:54:39,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:54:39,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:54:39,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:54:39,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:54:39,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:54:39,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:54:39,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:54:39,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:54:39,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:54:39,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:54:39,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:54:39,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:54:39,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:54:39,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:54:39,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:54:39,044 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:54:39,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:54:39,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:54:39,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:54:39,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:54:39,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:54:39,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:54:39,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:54:39,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:54:39,047 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:54:39,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:54:39,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:54:39,048 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:54:39,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:54:39,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:54:39,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:54:39,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:54:39,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:54:39,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:54:39,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:54:39,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:54:39,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:54:39,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:54:39,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:54:39,506 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:54:39,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2021-02-21 18:54:39,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d93c1c4c/068343d452c34f1bb95d50ef48a5fcd2/FLAGb1a4c47ae [2021-02-21 18:54:40,262 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:54:40,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2021-02-21 18:54:40,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d93c1c4c/068343d452c34f1bb95d50ef48a5fcd2/FLAGb1a4c47ae [2021-02-21 18:54:40,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d93c1c4c/068343d452c34f1bb95d50ef48a5fcd2 [2021-02-21 18:54:40,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:54:40,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:54:40,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:54:40,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:54:40,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:54:40,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:54:40" (1/1) ... [2021-02-21 18:54:40,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76008682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:40, skipping insertion in model container [2021-02-21 18:54:40,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:54:40" (1/1) ... [2021-02-21 18:54:40,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:54:40,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:54:40,839 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_product02.cil.c[1817,1830] [2021-02-21 18:54:40,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:54:41,009 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:54:41,029 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_product02.cil.c[1817,1830] [2021-02-21 18:54:41,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:54:41,135 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:54:41,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41 WrapperNode [2021-02-21 18:54:41,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:54:41,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:54:41,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:54:41,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:54:41,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (1/1) ... [2021-02-21 18:54:41,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (1/1) ... [2021-02-21 18:54:41,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (1/1) ... [2021-02-21 18:54:41,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (1/1) ... [2021-02-21 18:54:41,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (1/1) ... [2021-02-21 18:54:41,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (1/1) ... [2021-02-21 18:54:41,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (1/1) ... [2021-02-21 18:54:41,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:54:41,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:54:41,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:54:41,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:54:41,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (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 [2021-02-21 18:54:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:54:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:54:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:54:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:54:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:54:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:54:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:54:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:54:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:54:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:54:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:54:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:54:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:54:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:54:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:54:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:54:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:54:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:54:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:54:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:54:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:54:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:54:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:54:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:54:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:54:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:54:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:54:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:54:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:54:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:54:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:54:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:54:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:54:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:54:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:54:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:54:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:54:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:54:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:54:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:54:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:54:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:54:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:54:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:54:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:54:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:54:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:54:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:54:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:54:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:54:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:54:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:54:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:54:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:54:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:54:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:54:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:54:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:54:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:54:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:54:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:54:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:54:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:54:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:54:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:54:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:54:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:54:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:54:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:54:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:54:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:54:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:54:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:54:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:54:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:54:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:54:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:54:42,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:54:42,844 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:54:42,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:54:42 BoogieIcfgContainer [2021-02-21 18:54:42,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:54:42,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:54:42,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:54:42,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:54:42,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:54:40" (1/3) ... [2021-02-21 18:54:42,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113aa785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:54:42, skipping insertion in model container [2021-02-21 18:54:42,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:41" (2/3) ... [2021-02-21 18:54:42,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113aa785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:54:42, skipping insertion in model container [2021-02-21 18:54:42,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:54:42" (3/3) ... [2021-02-21 18:54:42,861 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product02.cil.c [2021-02-21 18:54:42,872 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:54:42,878 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:54:42,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:54:42,935 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:54:42,936 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:54:42,936 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:54:42,936 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:54:42,936 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:54:42,936 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:54:42,937 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:54:42,937 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:54:42,962 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states. [2021-02-21 18:54:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:54:42,984 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:42,985 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] [2021-02-21 18:54:42,985 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:42,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:42,992 INFO L82 PathProgramCache]: Analyzing trace with hash -30085744, now seen corresponding path program 1 times [2021-02-21 18:54:43,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:43,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162075736] [2021-02-21 18:54:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:43,088 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,789 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:54:43,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:54:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:54:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:54:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:54:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:54:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:54:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:54:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:44,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162075736] [2021-02-21 18:54:44,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:44,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:54:44,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219348912] [2021-02-21 18:54:44,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:54:44,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:44,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:54:44,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:54:44,065 INFO L87 Difference]: Start difference. First operand 268 states. Second operand 3 states. [2021-02-21 18:54:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:45,451 INFO L93 Difference]: Finished difference Result 380 states and 454 transitions. [2021-02-21 18:54:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:54:45,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:54:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:45,472 INFO L225 Difference]: With dead ends: 380 [2021-02-21 18:54:45,472 INFO L226 Difference]: Without dead ends: 248 [2021-02-21 18:54:45,477 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 [2021-02-21 18:54:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-02-21 18:54:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 210. [2021-02-21 18:54:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-02-21 18:54:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 224 transitions. [2021-02-21 18:54:45,675 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 224 transitions. Word has length 158 [2021-02-21 18:54:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:45,677 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 224 transitions. [2021-02-21 18:54:45,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:54:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 224 transitions. [2021-02-21 18:54:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:54:45,682 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:45,682 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] [2021-02-21 18:54:45,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:54:45,683 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:45,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1393722099, now seen corresponding path program 1 times [2021-02-21 18:54:45,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:45,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600190121] [2021-02-21 18:54:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:45,690 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:45,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:45,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:45,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:45,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:45,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:45,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,159 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:54:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:54:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:54:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:54:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:54:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:54:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:54:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:54:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:46,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600190121] [2021-02-21 18:54:46,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:46,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:54:46,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555724696] [2021-02-21 18:54:46,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:54:46,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:46,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:54:46,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:54:46,297 INFO L87 Difference]: Start difference. First operand 210 states and 224 transitions. Second operand 4 states. [2021-02-21 18:54:47,136 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:54:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:47,821 INFO L93 Difference]: Finished difference Result 292 states and 324 transitions. [2021-02-21 18:54:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:54:47,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:54:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:47,827 INFO L225 Difference]: With dead ends: 292 [2021-02-21 18:54:47,827 INFO L226 Difference]: Without dead ends: 231 [2021-02-21 18:54:47,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:54:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-02-21 18:54:47,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 200. [2021-02-21 18:54:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-02-21 18:54:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 211 transitions. [2021-02-21 18:54:47,943 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 211 transitions. Word has length 159 [2021-02-21 18:54:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:47,946 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 211 transitions. [2021-02-21 18:54:47,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:54:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 211 transitions. [2021-02-21 18:54:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:54:47,954 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:47,955 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] [2021-02-21 18:54:47,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:54:47,955 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:47,956 INFO L82 PathProgramCache]: Analyzing trace with hash 193313457, now seen corresponding path program 1 times [2021-02-21 18:54:47,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:47,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461343395] [2021-02-21 18:54:47,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:47,964 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:48,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:48,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:54:48,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,484 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:54:48,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:54:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:54:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:54:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:48,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:54:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:54:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:48,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:54:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:54:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:54:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:48,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:48,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:48,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461343395] [2021-02-21 18:54:48,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:48,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:54:48,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753777526] [2021-02-21 18:54:48,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:54:48,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:48,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:54:48,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:54:48,667 INFO L87 Difference]: Start difference. First operand 200 states and 211 transitions. Second operand 10 states. [2021-02-21 18:54:49,363 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:54:49,777 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:54:50,190 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:50,544 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:50,955 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:51,351 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:52,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:52,558 INFO L93 Difference]: Finished difference Result 338 states and 386 transitions. [2021-02-21 18:54:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:54:52,559 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:54:52,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:52,562 INFO L225 Difference]: With dead ends: 338 [2021-02-21 18:54:52,563 INFO L226 Difference]: Without dead ends: 253 [2021-02-21 18:54:52,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:54:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-02-21 18:54:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 200. [2021-02-21 18:54:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-02-21 18:54:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 210 transitions. [2021-02-21 18:54:52,657 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 210 transitions. Word has length 172 [2021-02-21 18:54:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:52,658 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 210 transitions. [2021-02-21 18:54:52,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:54:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 210 transitions. [2021-02-21 18:54:52,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-21 18:54:52,660 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:52,660 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] [2021-02-21 18:54:52,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:54:52,661 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:52,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:52,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1305722333, now seen corresponding path program 1 times [2021-02-21 18:54:52,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:52,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653102176] [2021-02-21 18:54:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:52,665 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:52,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:52,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:52,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:52,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:52,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:52,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:52,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:52,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:52,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:52,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:52,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:52,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:52,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:52,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:52,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:52,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,070 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:54:53,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:54:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:54:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:54:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:54:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:54:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:54:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:54:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 18:54:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 18:54:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 18:54:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:53,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653102176] [2021-02-21 18:54:53,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:53,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:54:53,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164915739] [2021-02-21 18:54:53,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:54:53,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:53,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:54:53,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:54:53,232 INFO L87 Difference]: Start difference. First operand 200 states and 210 transitions. Second operand 9 states. [2021-02-21 18:54:53,813 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:54:55,236 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:55,663 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:56,062 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:56,469 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:54:56,839 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:57,244 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:57,619 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:58,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:58,127 INFO L93 Difference]: Finished difference Result 430 states and 501 transitions. [2021-02-21 18:54:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:54:58,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2021-02-21 18:54:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:58,132 INFO L225 Difference]: With dead ends: 430 [2021-02-21 18:54:58,132 INFO L226 Difference]: Without dead ends: 345 [2021-02-21 18:54:58,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:54:58,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-02-21 18:54:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 275. [2021-02-21 18:54:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2021-02-21 18:54:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 297 transitions. [2021-02-21 18:54:58,275 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 297 transitions. Word has length 175 [2021-02-21 18:54:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:58,276 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 297 transitions. [2021-02-21 18:54:58,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:54:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 297 transitions. [2021-02-21 18:54:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-21 18:54:58,279 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:58,279 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] [2021-02-21 18:54:58,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:54:58,280 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash 194907971, now seen corresponding path program 1 times [2021-02-21 18:54:58,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:58,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722279339] [2021-02-21 18:54:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:58,284 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:54:58,389 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:54:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:54:58,493 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:54:58,696 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:54:58,696 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:54:58,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:54:58,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:54:58 BoogieIcfgContainer [2021-02-21 18:54:58,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:54:58,721 INFO L168 Benchmark]: Toolchain (without parser) took 18122.74 ms. Allocated memory was 155.2 MB in the beginning and 389.0 MB in the end (delta: 233.8 MB). Free memory was 131.4 MB in the beginning and 163.5 MB in the end (delta: -32.1 MB). Peak memory consumption was 202.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:58,722 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 128.5 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:54:58,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.06 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 110.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:58,723 INFO L168 Benchmark]: Boogie Preprocessor took 115.71 ms. Allocated memory is still 155.2 MB. Free memory was 110.7 MB in the beginning and 106.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:58,724 INFO L168 Benchmark]: RCFGBuilder took 1594.65 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 106.9 MB in the beginning and 153.2 MB in the end (delta: -46.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:58,724 INFO L168 Benchmark]: TraceAbstraction took 15869.46 ms. Allocated memory was 186.6 MB in the beginning and 389.0 MB in the end (delta: 202.4 MB). Free memory was 152.7 MB in the beginning and 163.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 191.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:58,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 128.5 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 520.06 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 110.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.71 ms. Allocated memory is still 155.2 MB. Free memory was 110.7 MB in the beginning and 106.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1594.65 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 106.9 MB in the beginning and 153.2 MB in the end (delta: -46.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15869.46 ms. Allocated memory was 186.6 MB in the beginning and 389.0 MB in the end (delta: 202.4 MB). Free memory was 152.7 MB in the beginning and 163.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 191.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 84]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L258] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L464] int pumpRunning = 0; [L465] int systemActive = 1; [L685] int cleanupTimeShifts = 4; [L781] int waterLevel = 1; [L782] int methaneLevelCritical = 0; [L758] int retValue_acc ; [L759] int tmp ; [L763] FCALL select_helpers() [L764] FCALL select_features() [L765] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L765] RET, EXPR valid_product() [L765] tmp = valid_product() [L767] COND TRUE \read(tmp) [L769] FCALL setup() [L770] CALL runTest() [L752] CALL test() [L619] int splverifierCounter ; [L620] int tmp ; [L621] int tmp___0 ; [L622] int tmp___1 ; [L623] int tmp___2 ; [L626] splverifierCounter = 0 [L628] COND TRUE 1 [L630] COND TRUE splverifierCounter < 4 [L636] tmp = __VERIFIER_nondet_int() [L638] COND TRUE \read(tmp) [L640] CALL waterRise() [L799] COND TRUE waterLevel < 2 [L800] waterLevel = waterLevel + 1 [L640] RET waterRise() [L646] tmp___0 = __VERIFIER_nondet_int() [L648] COND FALSE !(\read(tmp___0)) [L656] tmp___2 = __VERIFIER_nondet_int() [L658] COND TRUE \read(tmp___2) [L660] CALL startSystem() [L575] systemActive = 1 [L660] RET startSystem() [L673] CALL timeShift() [L472] COND FALSE !(\read(pumpRunning)) [L479] COND TRUE \read(systemActive) [L481] FCALL processEnvironment() [L487] CALL __utac_acc__Specification3_spec__1() [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L588] CALL, EXPR isMethaneLevelCritical() [L820] int retValue_acc ; [L823] retValue_acc = methaneLevelCritical [L824] return (retValue_acc); [L588] RET, EXPR isMethaneLevelCritical() [L588] tmp = isMethaneLevelCritical() [L590] COND FALSE !(\read(tmp)) [L594] CALL, EXPR getWaterLevel() [L852] int retValue_acc ; [L855] retValue_acc = waterLevel [L856] return (retValue_acc); [L594] RET, EXPR getWaterLevel() [L594] tmp___0 = getWaterLevel() [L596] COND TRUE tmp___0 == 2 [L598] CALL, EXPR isPumpRunning() [L527] int retValue_acc ; [L530] retValue_acc = pumpRunning [L531] return (retValue_acc); [L598] RET, EXPR isPumpRunning() [L598] tmp___1 = isPumpRunning() [L600] COND FALSE !(\read(tmp___1)) [L604] CALL __automaton_fail() [L84] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 591 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 776 SDtfs, 950 SDslu, 1287 SDs, 0 SdLazy, 1866 SolverSat, 281 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 192 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...