/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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:57:42,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:57:42,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:57:42,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:57:42,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:57:42,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:57:42,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:57:42,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:57:42,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:57:42,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:57:42,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:57:42,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:57:42,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:57:42,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:57:42,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:57:42,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:57:42,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:57:42,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:57:42,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:57:42,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:57:42,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:57:42,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:57:42,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:57:42,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:57:42,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:57:42,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:57:42,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:57:42,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:57:42,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:57:42,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:57:42,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:57:42,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:57:42,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:57:42,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:57:42,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:57:42,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:57:42,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:57:42,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:57:42,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:57:42,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:57:42,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:57:42,575 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 18:57:42,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:57:42,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:57:42,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:57:42,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:57:42,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:57:42,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:57:42,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:57:42,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:57:42,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:57:42,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:57:42,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:57:42,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:57:42,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:57:42,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:57:42,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:57:42,609 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:57:42,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:57:42,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:57:42,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:57:42,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:57:42,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:57:42,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:57:42,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:57:43,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:57:43,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:57:43,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:57:43,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:57:43,057 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:57:43,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2021-02-21 18:57:43,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4199feda/e5d98c2a9f3545a1b7019e9b93dcad4d/FLAG1c8fabf59 [2021-02-21 18:57:43,957 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:57:43,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2021-02-21 18:57:43,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4199feda/e5d98c2a9f3545a1b7019e9b93dcad4d/FLAG1c8fabf59 [2021-02-21 18:57:44,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4199feda/e5d98c2a9f3545a1b7019e9b93dcad4d [2021-02-21 18:57:44,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:57:44,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:57:44,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:44,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:57:44,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:57:44,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79def129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44, skipping insertion in model container [2021-02-21 18:57:44,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:57:44,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:57:44,499 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_product25.cil.c[1867,1880] [2021-02-21 18:57:44,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:57:44,664 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:57:44,682 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_product25.cil.c[1867,1880] [2021-02-21 18:57:44,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:57:44,856 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:57:44,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44 WrapperNode [2021-02-21 18:57:44,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:44,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:57:44,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:57:44,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:57:44,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (1/1) ... [2021-02-21 18:57:44,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:57:44,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:57:44,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:57:44,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:57:44,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (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 18:57:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:57:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:57:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:57:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:57:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:57:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:57:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:57:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:57:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:57:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:57:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:57:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:57:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:57:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:57:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:57:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:57:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:57:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:57:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:57:45,046 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:57:45,046 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:57:45,046 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:57:45,046 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:57:45,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:57:45,046 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:57:45,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:57:45,047 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:57:45,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:57:45,047 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:57:45,047 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:57:45,047 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:57:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 18:57:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:57:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:57:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:57:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:57:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:57:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:57:45,049 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:57:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:57:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:57:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:57:45,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:57:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:57:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:57:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:57:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:57:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:57:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:57:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:57:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:57:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:57:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:57:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:57:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:57:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:57:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:57:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:57:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:57:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:57:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:57:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:57:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:57:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:57:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:57:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:57:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:57:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:57:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:57:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:57:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:57:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:57:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:57:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:57:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:57:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:57:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:57:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:57:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:57:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:57:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:57:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:57:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:57:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:57:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:57:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:57:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:57:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 18:57:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:57:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:57:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:57:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:57:46,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:57:46,355 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:57:46,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:57:46 BoogieIcfgContainer [2021-02-21 18:57:46,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:57:46,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:57:46,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:57:46,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:57:46,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:57:44" (1/3) ... [2021-02-21 18:57:46,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7278fed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:57:46, skipping insertion in model container [2021-02-21 18:57:46,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:44" (2/3) ... [2021-02-21 18:57:46,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7278fed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:57:46, skipping insertion in model container [2021-02-21 18:57:46,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:57:46" (3/3) ... [2021-02-21 18:57:46,372 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c [2021-02-21 18:57:46,379 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:57:46,385 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:57:46,406 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:57:46,432 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:57:46,432 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:57:46,433 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:57:46,433 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:57:46,433 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:57:46,433 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:57:46,433 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:57:46,433 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:57:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2021-02-21 18:57:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:57:46,480 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:46,481 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 18:57:46,482 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash 375322265, now seen corresponding path program 1 times [2021-02-21 18:57:46,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:46,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890259179] [2021-02-21 18:57:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:46,584 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:46,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:46,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:46,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:46,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,258 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:47,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:47,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:47,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:47,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:47,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:47,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:47,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:47,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:47,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:47,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:47,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:57:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:47,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:47,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:57:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:47,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:47,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:57:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:47,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:47,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:47,472 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 18:57:47,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890259179] [2021-02-21 18:57:47,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:47,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:57:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938984492] [2021-02-21 18:57:47,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:57:47,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:47,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:57:47,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:57:47,500 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 3 states. [2021-02-21 18:57:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:49,120 INFO L93 Difference]: Finished difference Result 441 states and 523 transitions. [2021-02-21 18:57:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:57:49,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:57:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:49,151 INFO L225 Difference]: With dead ends: 441 [2021-02-21 18:57:49,151 INFO L226 Difference]: Without dead ends: 279 [2021-02-21 18:57:49,157 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 18:57:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-21 18:57:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 240. [2021-02-21 18:57:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-21 18:57:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 258 transitions. [2021-02-21 18:57:49,312 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 258 transitions. Word has length 158 [2021-02-21 18:57:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:49,313 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 258 transitions. [2021-02-21 18:57:49,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:57:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 258 transitions. [2021-02-21 18:57:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:57:49,318 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:49,318 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 18:57:49,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:57:49,319 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:49,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:49,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1828143069, now seen corresponding path program 1 times [2021-02-21 18:57:49,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:49,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104784506] [2021-02-21 18:57:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:49,328 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:49,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,810 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:57:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:57:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:57:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:49,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:49,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:49,934 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 18:57:49,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104784506] [2021-02-21 18:57:49,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:49,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:57:49,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657478213] [2021-02-21 18:57:49,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:57:49,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:49,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:57:49,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:57:49,937 INFO L87 Difference]: Start difference. First operand 240 states and 258 transitions. Second operand 4 states. [2021-02-21 18:57:50,668 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:57:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:51,535 INFO L93 Difference]: Finished difference Result 357 states and 397 transitions. [2021-02-21 18:57:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:57:51,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:57:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:51,550 INFO L225 Difference]: With dead ends: 357 [2021-02-21 18:57:51,551 INFO L226 Difference]: Without dead ends: 262 [2021-02-21 18:57:51,557 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 18:57:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-21 18:57:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-21 18:57:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-21 18:57:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 245 transitions. [2021-02-21 18:57:51,672 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 245 transitions. Word has length 159 [2021-02-21 18:57:51,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:51,673 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 245 transitions. [2021-02-21 18:57:51,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:57:51,673 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 245 transitions. [2021-02-21 18:57:51,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:57:51,682 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:51,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:57:51,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:57:51,684 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:51,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:51,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1762567636, now seen corresponding path program 1 times [2021-02-21 18:57:51,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:51,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484937026] [2021-02-21 18:57:51,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:51,696 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:51,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:51,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:51,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:51,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:51,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:51,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:51,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:51,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:57:51,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:51,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,393 WARN L202 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:52,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:57:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:52,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:52,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:52,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:57:52,557 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:57:52,559 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:57:52,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:52,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:57:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:52,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:57:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:52,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:57:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:52,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:52,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:52,638 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 18:57:52,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484937026] [2021-02-21 18:57:52,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:52,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:57:52,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225105458] [2021-02-21 18:57:52,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:57:52,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:52,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:57:52,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:57:52,649 INFO L87 Difference]: Start difference. First operand 230 states and 245 transitions. Second operand 9 states. [2021-02-21 18:57:53,273 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:53,717 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:57:54,085 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:57:54,467 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:54,831 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:55,213 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:56,697 INFO L93 Difference]: Finished difference Result 377 states and 422 transitions. [2021-02-21 18:57:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:57:56,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:57:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:56,702 INFO L225 Difference]: With dead ends: 377 [2021-02-21 18:57:56,702 INFO L226 Difference]: Without dead ends: 262 [2021-02-21 18:57:56,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:57:56,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-21 18:57:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-21 18:57:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-21 18:57:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 244 transitions. [2021-02-21 18:57:56,791 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 244 transitions. Word has length 168 [2021-02-21 18:57:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:56,791 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 244 transitions. [2021-02-21 18:57:56,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:57:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 244 transitions. [2021-02-21 18:57:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:57:56,794 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:56,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:57:56,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:57:56,795 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:56,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:56,796 INFO L82 PathProgramCache]: Analyzing trace with hash -745615343, now seen corresponding path program 1 times [2021-02-21 18:57:56,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:56,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420153698] [2021-02-21 18:57:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:56,800 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:56,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:56,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:56,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:56,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:56,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:56,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:56,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:56,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:56,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:56,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:56,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:56,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:56,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:56,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:56,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:56,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,202 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:57,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:57:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:57:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:57:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:57:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:57:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:57,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:57:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:57,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:57,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:57,411 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 18:57:57,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420153698] [2021-02-21 18:57:57,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:57,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:57:57,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939037094] [2021-02-21 18:57:57,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:57:57,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:57,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:57:57,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:57:57,413 INFO L87 Difference]: Start difference. First operand 230 states and 244 transitions. Second operand 9 states. [2021-02-21 18:57:58,059 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:59,836 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:00,240 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:00,709 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:01,137 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:01,526 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:01,944 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:02,334 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:03,033 INFO L93 Difference]: Finished difference Result 527 states and 618 transitions. [2021-02-21 18:58:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:58:03,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-21 18:58:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:03,041 INFO L225 Difference]: With dead ends: 527 [2021-02-21 18:58:03,041 INFO L226 Difference]: Without dead ends: 412 [2021-02-21 18:58:03,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:58:03,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-02-21 18:58:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 337. [2021-02-21 18:58:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-02-21 18:58:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 368 transitions. [2021-02-21 18:58:03,195 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 368 transitions. Word has length 176 [2021-02-21 18:58:03,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:03,196 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 368 transitions. [2021-02-21 18:58:03,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:58:03,196 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 368 transitions. [2021-02-21 18:58:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 18:58:03,199 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:03,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:58:03,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:58:03,200 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:03,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:03,201 INFO L82 PathProgramCache]: Analyzing trace with hash 562380444, now seen corresponding path program 1 times [2021-02-21 18:58:03,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:03,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027323998] [2021-02-21 18:58:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:03,204 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:58:03,275 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:58:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:58:03,341 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:58:03,521 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:58:03,522 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:58:03,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:58:03,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:58:03 BoogieIcfgContainer [2021-02-21 18:58:03,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:58:03,547 INFO L168 Benchmark]: Toolchain (without parser) took 19317.04 ms. Allocated memory was 154.1 MB in the beginning and 412.1 MB in the end (delta: 257.9 MB). Free memory was 130.2 MB in the beginning and 288.4 MB in the end (delta: -158.2 MB). Peak memory consumption was 100.8 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:03,548 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 154.1 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:58:03,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.21 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 108.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:03,549 INFO L168 Benchmark]: Boogie Preprocessor took 88.07 ms. Allocated memory is still 154.1 MB. Free memory was 108.5 MB in the beginning and 104.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:03,550 INFO L168 Benchmark]: RCFGBuilder took 1413.00 ms. Allocated memory is still 154.1 MB. Free memory was 104.6 MB in the beginning and 109.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:03,550 INFO L168 Benchmark]: TraceAbstraction took 17182.85 ms. Allocated memory was 154.1 MB in the beginning and 412.1 MB in the end (delta: 257.9 MB). Free memory was 109.7 MB in the beginning and 288.4 MB in the end (delta: -178.7 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:03,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 154.1 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 611.21 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 108.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.07 ms. Allocated memory is still 154.1 MB. Free memory was 108.5 MB in the beginning and 104.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1413.00 ms. Allocated memory is still 154.1 MB. Free memory was 104.6 MB in the beginning and 109.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17182.85 ms. Allocated memory was 154.1 MB in the beginning and 412.1 MB in the end (delta: 257.9 MB). Free memory was 109.7 MB in the beginning and 288.4 MB in the end (delta: -178.7 MB). Peak memory consumption was 79.2 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; [L460] int waterLevel = 1; [L461] int methaneLevelCritical = 0; [L587] int cleanupTimeShifts = 4; [L688] int pumpRunning = 0; [L689] int systemActive = 1; [L663] int retValue_acc ; [L664] int tmp ; [L668] FCALL select_helpers() [L669] FCALL select_features() [L670] CALL, EXPR valid_product() [L578] int retValue_acc ; [L581] retValue_acc = 1 [L582] return (retValue_acc); [L670] RET, EXPR valid_product() [L670] tmp = valid_product() [L672] COND TRUE \read(tmp) [L674] FCALL setup() [L675] CALL runTest() [L657] CALL test() [L859] int splverifierCounter ; [L860] int tmp ; [L861] int tmp___0 ; [L862] int tmp___1 ; [L863] int tmp___2 ; [L866] splverifierCounter = 0 [L868] COND TRUE 1 [L870] COND TRUE splverifierCounter < 4 [L876] tmp = __VERIFIER_nondet_int() [L878] COND TRUE \read(tmp) [L880] CALL waterRise() [L478] COND TRUE waterLevel < 2 [L479] waterLevel = waterLevel + 1 [L880] RET waterRise() [L886] tmp___0 = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp___0)) [L896] tmp___2 = __VERIFIER_nondet_int() [L898] COND TRUE \read(tmp___2) [L911] CALL timeShift() [L695] COND FALSE !(\read(pumpRunning)) [L702] COND TRUE \read(systemActive) [L704] CALL processEnvironment() [L724] int tmp ; [L727] COND FALSE !(\read(pumpRunning)) [L742] FCALL processEnvironment__wrappee__base() [L704] RET processEnvironment() [L710] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L499] int retValue_acc ; [L502] retValue_acc = methaneLevelCritical [L503] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L531] int retValue_acc ; [L534] retValue_acc = waterLevel [L535] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L794] int retValue_acc ; [L797] retValue_acc = pumpRunning [L798] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L84] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 876 SDtfs, 1044 SDslu, 1165 SDs, 0 SdLazy, 2274 SolverSat, 318 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 178 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...