/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:29:56,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:29:56,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:29:56,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:29:56,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:29:56,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:29:56,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:29:56,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:29:56,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:29:56,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:29:56,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:29:56,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:29:56,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:29:56,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:29:56,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:29:56,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:29:56,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:29:56,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:29:56,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:29:56,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:29:56,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:29:56,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:29:56,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:29:56,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:29:56,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:29:56,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:29:56,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:29:56,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:29:56,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:29:56,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:29:56,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:29:56,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:29:56,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:29:56,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:29:56,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:29:56,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:29:56,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:29:56,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:29:56,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:29:56,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:29:56,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:29:56,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:29:56,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:29:56,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:29:56,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:29:56,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:29:56,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:29:56,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:29:56,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:29:56,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:29:56,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:29:56,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:29:56,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:29:56,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:29:56,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:29:56,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:29:56,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:29:56,520 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:29:56,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:29:56,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:29:56,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:29:56,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:29:56,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:29:56,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:29:56,521 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:29:56,521 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:29:56,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:29:56,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:29:56,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:29:56,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:29:56,932 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:29:56,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c [2021-02-24 03:29:57,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99248269b/951e39af4e01484b93f8d9164c286ca7/FLAG74201a1de [2021-02-24 03:29:57,706 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:29:57,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c [2021-02-24 03:29:57,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99248269b/951e39af4e01484b93f8d9164c286ca7/FLAG74201a1de [2021-02-24 03:29:58,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99248269b/951e39af4e01484b93f8d9164c286ca7 [2021-02-24 03:29:58,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:29:58,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:29:58,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:29:58,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:29:58,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:29:58,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@942dee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58, skipping insertion in model container [2021-02-24 03:29:58,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:29:58,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:29:58,396 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_product55.cil.c[3453,3466] [2021-02-24 03:29:58,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:29:58,587 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:29:58,638 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_product55.cil.c[3453,3466] [2021-02-24 03:29:58,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:29:58,740 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:29:58,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58 WrapperNode [2021-02-24 03:29:58,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:29:58,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:29:58,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:29:58,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:29:58,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (1/1) ... [2021-02-24 03:29:58,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:29:58,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:29:58,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:29:58,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:29:58,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:29:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:29:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:29:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:29:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:29:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:29:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:29:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:29:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:29:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:29:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:29:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:29:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:29:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:29:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:29:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:29:59,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:29:59,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:29:59,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:29:59,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:29:59,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:29:59,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:29:59,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:29:59,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:29:59,031 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:29:59,031 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:29:59,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:29:59,031 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:29:59,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:29:59,031 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:29:59,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:29:59,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:29:59,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-24 03:29:59,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:29:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:29:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:29:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:29:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:29:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:29:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:29:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:29:59,034 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:29:59,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:29:59,034 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:29:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:29:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:29:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:29:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:29:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:29:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:29:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:29:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:29:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:29:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:29:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:29:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:29:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:29:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:29:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:29:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:29:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:29:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:29:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:29:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:29:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:29:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:29:59,039 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:29:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:29:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:29:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:29:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:29:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:29:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:29:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:29:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:29:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:29:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:29:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:29:59,042 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:29:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:29:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:29:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:29:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:29:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:29:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:29:59,045 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:29:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:29:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:29:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:29:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:29:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-24 03:29:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:29:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:29:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:29:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:30:00,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:30:00,490 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:30:00,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:30:00 BoogieIcfgContainer [2021-02-24 03:30:00,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:30:00,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:30:00,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:30:00,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:30:00,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:29:58" (1/3) ... [2021-02-24 03:30:00,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6f1045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:30:00, skipping insertion in model container [2021-02-24 03:30:00,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:58" (2/3) ... [2021-02-24 03:30:00,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6f1045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:30:00, skipping insertion in model container [2021-02-24 03:30:00,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:30:00" (3/3) ... [2021-02-24 03:30:00,503 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product55.cil.c [2021-02-24 03:30:00,510 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:30:00,516 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:30:00,536 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:30:00,561 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:30:00,561 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:30:00,562 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:30:00,562 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:30:00,562 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:30:00,562 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:30:00,562 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:30:00,562 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:30:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2021-02-24 03:30:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:30:00,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:00,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:00,612 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2096902, now seen corresponding path program 1 times [2021-02-24 03:30:00,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:00,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782784866] [2021-02-24 03:30:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:00,707 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,428 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:30:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:30:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:30:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:01,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:01,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:01,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782784866] [2021-02-24 03:30:01,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:01,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:30:01,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203768291] [2021-02-24 03:30:01,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:30:01,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:01,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:30:01,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:30:01,677 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 3 states. [2021-02-24 03:30:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:03,795 INFO L93 Difference]: Finished difference Result 573 states and 682 transitions. [2021-02-24 03:30:03,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:30:03,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:30:03,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:03,817 INFO L225 Difference]: With dead ends: 573 [2021-02-24 03:30:03,817 INFO L226 Difference]: Without dead ends: 348 [2021-02-24 03:30:03,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:30:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-02-24 03:30:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2021-02-24 03:30:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-24 03:30:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 333 transitions. [2021-02-24 03:30:04,024 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 333 transitions. Word has length 158 [2021-02-24 03:30:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:04,025 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 333 transitions. [2021-02-24 03:30:04,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:30:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 333 transitions. [2021-02-24 03:30:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:30:04,030 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:04,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:04,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:30:04,031 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:04,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:04,032 INFO L82 PathProgramCache]: Analyzing trace with hash 302537829, now seen corresponding path program 1 times [2021-02-24 03:30:04,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:04,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028429440] [2021-02-24 03:30:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:04,040 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:04,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,608 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:30:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:30:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:30:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:04,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:04,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:04,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028429440] [2021-02-24 03:30:04,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:04,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:30:04,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407225666] [2021-02-24 03:30:04,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:30:04,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:04,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:30:04,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:30:04,725 INFO L87 Difference]: Start difference. First operand 303 states and 333 transitions. Second operand 4 states. [2021-02-24 03:30:05,493 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:30:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:06,938 INFO L93 Difference]: Finished difference Result 483 states and 548 transitions. [2021-02-24 03:30:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:30:06,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:30:06,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:06,947 INFO L225 Difference]: With dead ends: 483 [2021-02-24 03:30:06,947 INFO L226 Difference]: Without dead ends: 331 [2021-02-24 03:30:06,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:30:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-02-24 03:30:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 293. [2021-02-24 03:30:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-24 03:30:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 320 transitions. [2021-02-24 03:30:07,085 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 320 transitions. Word has length 159 [2021-02-24 03:30:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:07,086 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 320 transitions. [2021-02-24 03:30:07,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:30:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 320 transitions. [2021-02-24 03:30:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-24 03:30:07,089 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:07,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:07,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:30:07,090 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash -750812611, now seen corresponding path program 1 times [2021-02-24 03:30:07,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:07,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816114221] [2021-02-24 03:30:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:07,095 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:07,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:07,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:07,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:07,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:30:07,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:30:07,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:30:07,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,570 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:30:07,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:30:07,682 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:30:07,683 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:30:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:30:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:30:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-24 03:30:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:07,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:07,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:07,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816114221] [2021-02-24 03:30:07,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:07,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:30:07,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471730440] [2021-02-24 03:30:07,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:30:07,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:07,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:30:07,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:30:07,764 INFO L87 Difference]: Start difference. First operand 293 states and 320 transitions. Second operand 9 states. [2021-02-24 03:30:08,495 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:30:08,912 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:30:09,262 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:30:09,648 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:10,072 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:30:10,479 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:11,622 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:30:15,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:15,034 INFO L93 Difference]: Finished difference Result 795 states and 919 transitions. [2021-02-24 03:30:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:30:15,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-24 03:30:15,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:15,041 INFO L225 Difference]: With dead ends: 795 [2021-02-24 03:30:15,041 INFO L226 Difference]: Without dead ends: 617 [2021-02-24 03:30:15,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:30:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-02-24 03:30:15,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 546. [2021-02-24 03:30:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2021-02-24 03:30:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 615 transitions. [2021-02-24 03:30:15,305 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 615 transitions. Word has length 168 [2021-02-24 03:30:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:15,305 INFO L480 AbstractCegarLoop]: Abstraction has 546 states and 615 transitions. [2021-02-24 03:30:15,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:30:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 615 transitions. [2021-02-24 03:30:15,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-24 03:30:15,310 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:15,310 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] [2021-02-24 03:30:15,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:30:15,311 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:15,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1986161027, now seen corresponding path program 1 times [2021-02-24 03:30:15,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:15,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174028342] [2021-02-24 03:30:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:15,315 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,738 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:15,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:30:15,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:30:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:30:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-24 03:30:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-24 03:30:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:15,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:15,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:15,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174028342] [2021-02-24 03:30:15,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:15,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:30:15,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929066702] [2021-02-24 03:30:15,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:30:15,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:15,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:30:15,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:30:15,960 INFO L87 Difference]: Start difference. First operand 546 states and 615 transitions. Second operand 9 states. [2021-02-24 03:30:16,594 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:30:19,189 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:19,645 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:30:20,121 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:20,581 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:30:20,977 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:30:21,389 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:21,745 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:30:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:23,021 INFO L93 Difference]: Finished difference Result 1495 states and 1804 transitions. [2021-02-24 03:30:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:30:23,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-24 03:30:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:23,030 INFO L225 Difference]: With dead ends: 1495 [2021-02-24 03:30:23,030 INFO L226 Difference]: Without dead ends: 1064 [2021-02-24 03:30:23,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-24 03:30:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-02-24 03:30:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 960. [2021-02-24 03:30:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2021-02-24 03:30:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1108 transitions. [2021-02-24 03:30:23,608 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1108 transitions. Word has length 177 [2021-02-24 03:30:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:23,609 INFO L480 AbstractCegarLoop]: Abstraction has 960 states and 1108 transitions. [2021-02-24 03:30:23,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:30:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1108 transitions. [2021-02-24 03:30:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:30:23,618 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:23,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:23,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:30:23,619 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1981712091, now seen corresponding path program 1 times [2021-02-24 03:30:23,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:23,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102343995] [2021-02-24 03:30:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:23,625 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:23,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:23,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:23,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:23,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:23,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:23,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:23,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:23,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:23,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:23,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:23,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:23,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:23,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:23,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,032 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:30:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:30:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:30:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:30:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:30:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:30:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:30:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:30:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:30:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-24 03:30:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-24 03:30:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-24 03:30:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:30:24,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:30:24,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:30:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:30:24,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102343995] [2021-02-24 03:30:24,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:30:24,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:30:24,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641455613] [2021-02-24 03:30:24,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:30:24,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:30:24,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:30:24,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:30:24,209 INFO L87 Difference]: Start difference. First operand 960 states and 1108 transitions. Second operand 6 states. [2021-02-24 03:30:24,813 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:30:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:30:27,730 INFO L93 Difference]: Finished difference Result 2115 states and 2559 transitions. [2021-02-24 03:30:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 03:30:27,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-24 03:30:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:30:27,739 INFO L225 Difference]: With dead ends: 2115 [2021-02-24 03:30:27,740 INFO L226 Difference]: Without dead ends: 1270 [2021-02-24 03:30:27,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:30:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-02-24 03:30:28,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1173. [2021-02-24 03:30:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2021-02-24 03:30:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1340 transitions. [2021-02-24 03:30:28,245 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1340 transitions. Word has length 182 [2021-02-24 03:30:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:30:28,246 INFO L480 AbstractCegarLoop]: Abstraction has 1173 states and 1340 transitions. [2021-02-24 03:30:28,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:30:28,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1340 transitions. [2021-02-24 03:30:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:30:28,249 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:30:28,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:30:28,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:30:28,250 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:30:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:30:28,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1850642740, now seen corresponding path program 1 times [2021-02-24 03:30:28,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:30:28,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146903113] [2021-02-24 03:30:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:30:28,254 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:30:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:30:28,326 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:30:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:30:28,396 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:30:28,581 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:30:28,581 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:30:28,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:30:28,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:30:28 BoogieIcfgContainer [2021-02-24 03:30:28,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:30:28,607 INFO L168 Benchmark]: Toolchain (without parser) took 30566.02 ms. Allocated memory was 155.2 MB in the beginning and 634.4 MB in the end (delta: 479.2 MB). Free memory was 130.8 MB in the beginning and 377.5 MB in the end (delta: -246.7 MB). Peak memory consumption was 233.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:28,607 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:30:28,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.75 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 107.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:28,608 INFO L168 Benchmark]: Boogie Preprocessor took 126.81 ms. Allocated memory is still 155.2 MB. Free memory was 107.9 MB in the beginning and 103.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:28,608 INFO L168 Benchmark]: RCFGBuilder took 1623.41 ms. Allocated memory was 155.2 MB in the beginning and 204.5 MB in the end (delta: 49.3 MB). Free memory was 103.8 MB in the beginning and 168.0 MB in the end (delta: -64.2 MB). Peak memory consumption was 56.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:28,609 INFO L168 Benchmark]: TraceAbstraction took 28110.49 ms. Allocated memory was 204.5 MB in the beginning and 634.4 MB in the end (delta: 429.9 MB). Free memory was 167.5 MB in the beginning and 377.5 MB in the end (delta: -210.0 MB). Peak memory consumption was 219.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:30:28,611 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 is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 679.75 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 107.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 126.81 ms. Allocated memory is still 155.2 MB. Free memory was 107.9 MB in the beginning and 103.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1623.41 ms. Allocated memory was 155.2 MB in the beginning and 204.5 MB in the end (delta: 49.3 MB). Free memory was 103.8 MB in the beginning and 168.0 MB in the end (delta: -64.2 MB). Peak memory consumption was 56.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28110.49 ms. Allocated memory was 204.5 MB in the beginning and 634.4 MB in the end (delta: 429.9 MB). Free memory was 167.5 MB in the beginning and 377.5 MB in the end (delta: -210.0 MB). Peak memory consumption was 219.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 195]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L369] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L566] int cleanupTimeShifts = 4; [L669] int pumpRunning = 0; [L670] int systemActive = 1; [L642] int retValue_acc ; [L643] int tmp ; [L647] FCALL select_helpers() [L648] FCALL select_features() [L649] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L649] RET, EXPR valid_product() [L649] tmp = valid_product() [L651] COND TRUE \read(tmp) [L653] FCALL setup() [L654] CALL runTest() [L636] CALL test() [L943] int splverifierCounter ; [L944] int tmp ; [L945] int tmp___0 ; [L946] int tmp___1 ; [L947] int tmp___2 ; [L950] splverifierCounter = 0 [L952] COND TRUE 1 [L954] COND TRUE splverifierCounter < 4 [L960] tmp = __VERIFIER_nondet_int() [L962] COND TRUE \read(tmp) [L964] CALL waterRise() [L106] COND TRUE waterLevel < 2 [L107] waterLevel = waterLevel + 1 [L964] RET waterRise() [L970] tmp___0 = __VERIFIER_nondet_int() [L972] COND FALSE !(\read(tmp___0)) [L980] tmp___2 = __VERIFIER_nondet_int() [L982] COND FALSE !(\read(tmp___2)) [L986] tmp___1 = __VERIFIER_nondet_int() [L988] COND TRUE \read(tmp___1) [L990] CALL stopSystem() [L896] COND FALSE !(\read(pumpRunning)) [L903] systemActive = 0 [L990] RET stopSystem() [L997] CALL timeShift() [L677] COND FALSE !(\read(pumpRunning)) [L684] COND FALSE !(\read(systemActive)) [L692] CALL __utac_acc__Specification3_spec__1() [L909] int tmp ; [L910] int tmp___0 ; [L911] int tmp___1 ; [L915] CALL, EXPR isMethaneLevelCritical() [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L915] RET, EXPR isMethaneLevelCritical() [L915] tmp = isMethaneLevelCritical() [L917] COND FALSE !(\read(tmp)) [L921] CALL, EXPR getWaterLevel() [L159] int retValue_acc ; [L162] retValue_acc = waterLevel [L163] return (retValue_acc); [L921] RET, EXPR getWaterLevel() [L921] tmp___0 = getWaterLevel() [L923] COND TRUE tmp___0 == 2 [L925] CALL, EXPR isPumpRunning() [L810] int retValue_acc ; [L813] retValue_acc = pumpRunning [L814] return (retValue_acc); [L925] RET, EXPR isPumpRunning() [L925] tmp___1 = isPumpRunning() [L927] COND FALSE !(\read(tmp___1)) [L931] CALL __automaton_fail() [L195] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 670 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 22.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1434 SDtfs, 2296 SDslu, 1543 SDs, 0 SdLazy, 4273 SolverSat, 769 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1173occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...