/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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:04:25,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:04:25,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:04:25,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:04:25,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:04:25,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:04:25,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:04:25,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:04:25,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:04:25,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:04:25,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:04:25,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:04:25,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:04:25,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:04:25,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:04:25,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:04:25,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:04:25,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:04:25,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:04:25,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:04:25,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:04:25,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:04:25,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:04:25,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:04:25,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:04:25,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:04:25,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:04:25,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:04:25,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:04:25,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:04:25,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:04:25,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:04:25,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:04:25,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:04:25,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:04:25,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:04:25,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:04:25,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:04:25,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:04:25,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:04:25,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:04:25,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:04:25,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:04:25,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:04:25,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:04:25,325 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:04:25,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:04:25,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:04:25,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:04:25,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:04:25,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:04:25,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:04:25,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:04:25,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:04:25,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:04:25,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:04:25,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:04:25,328 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:04:25,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:04:25,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:04:25,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:04:25,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:04:25,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:04:25,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:04:25,330 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:04:25,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:04:25,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:04:25,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:04:25,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:04:25,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:04:25,762 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:04:25,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2021-02-22 01:04:25,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f96c0ce8d/35fc99bc5aed4624b316d7c6216a28b8/FLAGb69f7e5ba [2021-02-22 01:04:26,531 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:04:26,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2021-02-22 01:04:26,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f96c0ce8d/35fc99bc5aed4624b316d7c6216a28b8/FLAGb69f7e5ba [2021-02-22 01:04:26,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f96c0ce8d/35fc99bc5aed4624b316d7c6216a28b8 [2021-02-22 01:04:26,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:04:26,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:04:26,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:04:26,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:04:26,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:04:26,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:04:26" (1/1) ... [2021-02-22 01:04:26,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527b1adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:26, skipping insertion in model container [2021-02-22 01:04:26,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:04:26" (1/1) ... [2021-02-22 01:04:26,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:04:26,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:04:27,107 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_product47.cil.c[1281,1294] [2021-02-22 01:04:27,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:04:27,324 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:04:27,363 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_product47.cil.c[1281,1294] [2021-02-22 01:04:27,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:04:27,663 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:04:27,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27 WrapperNode [2021-02-22 01:04:27,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:04:27,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:04:27,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:04:27,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:04:27,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (1/1) ... [2021-02-22 01:04:27,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (1/1) ... [2021-02-22 01:04:27,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (1/1) ... [2021-02-22 01:04:27,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (1/1) ... [2021-02-22 01:04:27,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (1/1) ... [2021-02-22 01:04:27,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (1/1) ... [2021-02-22 01:04:27,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (1/1) ... [2021-02-22 01:04:27,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:04:27,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:04:27,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:04:27,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:04:27,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (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 [2021-02-22 01:04:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:04:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:04:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:04:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:04:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:04:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:04:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:04:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:04:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:04:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:04:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:04:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:04:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:04:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:04:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:04:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:04:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:04:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:04:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:04:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:04:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:04:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:04:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:04:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-22 01:04:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:04:27,958 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-22 01:04:27,959 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:04:27,959 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:04:27,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:04:27,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:04:27,959 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:04:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 01:04:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 01:04:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:04:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:04:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:04:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:04:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:04:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:04:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 01:04:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:04:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:04:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:04:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:04:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:04:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:04:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:04:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:04:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:04:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:04:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:04:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:04:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:04:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:04:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:04:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:04:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:04:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:04:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:04:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:04:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:04:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:04:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:04:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:04:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:04:27,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:04:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:04:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:04:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:04:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:04:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:04:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:04:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:04:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:04:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:04:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:04:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:04:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 01:04:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:04:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:04:27,967 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:04:27,968 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 01:04:27,968 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:04:27,968 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:04:27,969 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:04:27,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:04:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:04:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:04:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 01:04:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-22 01:04:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:04:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-22 01:04:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:04:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:04:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:04:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:04:29,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:04:29,431 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:04:29,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:04:29 BoogieIcfgContainer [2021-02-22 01:04:29,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:04:29,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:04:29,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:04:29,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:04:29,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:04:26" (1/3) ... [2021-02-22 01:04:29,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61923aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:04:29, skipping insertion in model container [2021-02-22 01:04:29,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:04:27" (2/3) ... [2021-02-22 01:04:29,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61923aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:04:29, skipping insertion in model container [2021-02-22 01:04:29,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:04:29" (3/3) ... [2021-02-22 01:04:29,445 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2021-02-22 01:04:29,452 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:04:29,458 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:04:29,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:04:29,504 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:04:29,505 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:04:29,505 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:04:29,505 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:04:29,505 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:04:29,505 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:04:29,505 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:04:29,506 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:04:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states. [2021-02-22 01:04:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:04:29,553 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:29,554 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] [2021-02-22 01:04:29,555 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:29,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:29,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1629313999, now seen corresponding path program 1 times [2021-02-22 01:04:29,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:29,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389556963] [2021-02-22 01:04:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:29,650 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,385 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:04:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:04:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:04:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:30,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:30,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:30,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389556963] [2021-02-22 01:04:30,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:30,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:04:30,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610298554] [2021-02-22 01:04:30,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:04:30,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:30,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:04:30,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:04:30,671 INFO L87 Difference]: Start difference. First operand 333 states. Second operand 3 states. [2021-02-22 01:04:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:32,532 INFO L93 Difference]: Finished difference Result 529 states and 631 transitions. [2021-02-22 01:04:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:04:32,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:04:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:32,552 INFO L225 Difference]: With dead ends: 529 [2021-02-22 01:04:32,553 INFO L226 Difference]: Without dead ends: 326 [2021-02-22 01:04:32,558 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 [2021-02-22 01:04:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-02-22 01:04:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2021-02-22 01:04:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-22 01:04:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 308 transitions. [2021-02-22 01:04:32,775 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 308 transitions. Word has length 158 [2021-02-22 01:04:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:32,776 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 308 transitions. [2021-02-22 01:04:32,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:04:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 308 transitions. [2021-02-22 01:04:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:04:32,782 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:32,783 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] [2021-02-22 01:04:32,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:04:32,783 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:32,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:32,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1816359164, now seen corresponding path program 1 times [2021-02-22 01:04:32,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:32,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671588696] [2021-02-22 01:04:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:32,789 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:32,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:32,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:32,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:32,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,251 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:33,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:04:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:04:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:04:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:33,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:33,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:33,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671588696] [2021-02-22 01:04:33,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:33,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:04:33,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850294131] [2021-02-22 01:04:33,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:04:33,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:33,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:04:33,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:04:33,383 INFO L87 Difference]: Start difference. First operand 281 states and 308 transitions. Second operand 4 states. [2021-02-22 01:04:34,173 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:04:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:35,514 INFO L93 Difference]: Finished difference Result 439 states and 497 transitions. [2021-02-22 01:04:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:04:35,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:04:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:35,521 INFO L225 Difference]: With dead ends: 439 [2021-02-22 01:04:35,521 INFO L226 Difference]: Without dead ends: 309 [2021-02-22 01:04:35,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:04:35,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-02-22 01:04:35,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 271. [2021-02-22 01:04:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2021-02-22 01:04:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2021-02-22 01:04:35,651 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 159 [2021-02-22 01:04:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:35,652 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2021-02-22 01:04:35,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:04:35,652 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2021-02-22 01:04:35,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-22 01:04:35,656 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:35,656 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] [2021-02-22 01:04:35,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:04:35,656 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:35,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:35,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1677160890, now seen corresponding path program 1 times [2021-02-22 01:04:35,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:35,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654479557] [2021-02-22 01:04:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:35,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:35,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:35,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:35,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:35,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:35,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:35,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:35,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:35,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:35,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:35,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:04:35,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:35,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:04:35,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:35,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:04:35,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:35,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,097 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:36,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:36,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:04:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:36,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:36,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:36,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:04:36,206 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-22 01:04:36,208 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-22 01:04:36,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:36,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:04:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:36,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:04:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:36,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-22 01:04:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:36,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:36,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:36,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654479557] [2021-02-22 01:04:36,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:36,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:04:36,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595986892] [2021-02-22 01:04:36,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:04:36,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:36,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:04:36,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:04:36,320 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand 9 states. [2021-02-22 01:04:36,953 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:37,468 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:04:37,845 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:04:38,241 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:38,611 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:38,988 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:40,057 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:04:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:42,897 INFO L93 Difference]: Finished difference Result 729 states and 842 transitions. [2021-02-22 01:04:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:04:42,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-22 01:04:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:42,906 INFO L225 Difference]: With dead ends: 729 [2021-02-22 01:04:42,906 INFO L226 Difference]: Without dead ends: 573 [2021-02-22 01:04:42,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:04:42,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-02-22 01:04:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 502. [2021-02-22 01:04:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2021-02-22 01:04:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 565 transitions. [2021-02-22 01:04:43,141 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 565 transitions. Word has length 168 [2021-02-22 01:04:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:43,142 INFO L480 AbstractCegarLoop]: Abstraction has 502 states and 565 transitions. [2021-02-22 01:04:43,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:04:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 565 transitions. [2021-02-22 01:04:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-22 01:04:43,147 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:43,147 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] [2021-02-22 01:04:43,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:04:43,148 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:43,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1286669336, now seen corresponding path program 1 times [2021-02-22 01:04:43,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:43,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172591670] [2021-02-22 01:04:43,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:43,153 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,641 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:43,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:04:43,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:04:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:04:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-22 01:04:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:43,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-22 01:04:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:43,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:43,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:43,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172591670] [2021-02-22 01:04:43,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:43,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:04:43,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034149108] [2021-02-22 01:04:43,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:04:43,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:43,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:04:43,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:04:43,886 INFO L87 Difference]: Start difference. First operand 502 states and 565 transitions. Second operand 9 states. [2021-02-22 01:04:44,552 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:46,873 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:47,241 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:47,666 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:48,110 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:48,485 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:04:48,851 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:49,228 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:04:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:50,501 INFO L93 Difference]: Finished difference Result 1363 states and 1646 transitions. [2021-02-22 01:04:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:04:50,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-22 01:04:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:50,515 INFO L225 Difference]: With dead ends: 1363 [2021-02-22 01:04:50,515 INFO L226 Difference]: Without dead ends: 976 [2021-02-22 01:04:50,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:04:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-02-22 01:04:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 872. [2021-02-22 01:04:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2021-02-22 01:04:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1006 transitions. [2021-02-22 01:04:50,970 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1006 transitions. Word has length 177 [2021-02-22 01:04:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:50,971 INFO L480 AbstractCegarLoop]: Abstraction has 872 states and 1006 transitions. [2021-02-22 01:04:50,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:04:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1006 transitions. [2021-02-22 01:04:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:04:50,977 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:50,977 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] [2021-02-22 01:04:50,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:04:50,978 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1818383811, now seen corresponding path program 1 times [2021-02-22 01:04:50,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:50,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608810423] [2021-02-22 01:04:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:50,982 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:51,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:51,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:51,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:51,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:51,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:51,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,377 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:04:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:04:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:51,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:04:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:04:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:04:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:04:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:04:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:04:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:04:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:04:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:04:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-22 01:04:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:04:51,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:04:51,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:04:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:04:51,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608810423] [2021-02-22 01:04:51,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:04:51,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:04:51,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270077181] [2021-02-22 01:04:51,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:04:51,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:04:51,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:04:51,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:04:51,524 INFO L87 Difference]: Start difference. First operand 872 states and 1006 transitions. Second operand 6 states. [2021-02-22 01:04:52,116 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:04:54,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:04:54,853 INFO L93 Difference]: Finished difference Result 2011 states and 2421 transitions. [2021-02-22 01:04:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:04:54,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-22 01:04:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:04:54,863 INFO L225 Difference]: With dead ends: 2011 [2021-02-22 01:04:54,864 INFO L226 Difference]: Without dead ends: 1254 [2021-02-22 01:04:54,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:04:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-02-22 01:04:55,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1157. [2021-02-22 01:04:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2021-02-22 01:04:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1320 transitions. [2021-02-22 01:04:55,564 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1320 transitions. Word has length 182 [2021-02-22 01:04:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:04:55,566 INFO L480 AbstractCegarLoop]: Abstraction has 1157 states and 1320 transitions. [2021-02-22 01:04:55,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:04:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1320 transitions. [2021-02-22 01:04:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:04:55,569 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:04:55,570 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] [2021-02-22 01:04:55,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:04:55,570 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:04:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:04:55,571 INFO L82 PathProgramCache]: Analyzing trace with hash -320143715, now seen corresponding path program 1 times [2021-02-22 01:04:55,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:04:55,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37804684] [2021-02-22 01:04:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:04:55,575 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:04:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:04:55,650 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:04:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:04:55,715 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:04:55,911 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:04:55,912 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:04:55,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:04:55,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:04:55 BoogieIcfgContainer [2021-02-22 01:04:55,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:04:55,940 INFO L168 Benchmark]: Toolchain (without parser) took 29100.60 ms. Allocated memory was 151.0 MB in the beginning and 619.7 MB in the end (delta: 468.7 MB). Free memory was 126.8 MB in the beginning and 374.8 MB in the end (delta: -248.0 MB). Peak memory consumption was 221.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:55,940 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:04:55,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:55,941 INFO L168 Benchmark]: Boogie Preprocessor took 153.30 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 131.1 MB in the end (delta: -27.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:55,941 INFO L168 Benchmark]: RCFGBuilder took 1612.74 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 81.0 MB in the end (delta: 50.1 MB). Peak memory consumption was 61.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:55,942 INFO L168 Benchmark]: TraceAbstraction took 26501.65 ms. Allocated memory was 151.0 MB in the beginning and 619.7 MB in the end (delta: 468.7 MB). Free memory was 80.4 MB in the beginning and 374.8 MB in the end (delta: -294.3 MB). Peak memory consumption was 173.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:04:55,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 811.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 153.30 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 131.1 MB in the end (delta: -27.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1612.74 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 81.0 MB in the end (delta: 50.1 MB). Peak memory consumption was 61.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26501.65 ms. Allocated memory was 151.0 MB in the beginning and 619.7 MB in the end (delta: 468.7 MB). Free memory was 80.4 MB in the beginning and 374.8 MB in the end (delta: -294.3 MB). Peak memory consumption was 173.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L631] int pumpRunning = 0; [L632] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L132] int retValue_acc ; [L133] int tmp ; [L137] FCALL select_helpers() [L138] FCALL select_features() [L139] CALL, EXPR valid_product() [L181] int retValue_acc ; [L184] retValue_acc = 1 [L185] return (retValue_acc); [L139] RET, EXPR valid_product() [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) [L143] FCALL setup() [L144] CALL runTest() [L123] CALL test() [L558] int splverifierCounter ; [L559] int tmp ; [L560] int tmp___0 ; [L561] int tmp___1 ; [L562] int tmp___2 ; [L565] splverifierCounter = 0 [L567] COND TRUE 1 [L569] COND TRUE splverifierCounter < 4 [L575] tmp = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp) [L579] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L579] RET waterRise() [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp___0)) [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND FALSE !(\read(tmp___2)) [L601] tmp___1 = __VERIFIER_nondet_int() [L603] COND TRUE \read(tmp___1) [L605] CALL stopSystem() [L830] COND FALSE !(\read(pumpRunning)) [L837] systemActive = 0 [L605] RET stopSystem() [L612] CALL timeShift() [L639] COND FALSE !(\read(pumpRunning)) [L646] COND FALSE !(\read(systemActive)) [L654] CALL __utac_acc__Specification3_spec__1() [L938] int tmp ; [L939] int tmp___0 ; [L940] int tmp___1 ; [L944] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L944] RET, EXPR isMethaneLevelCritical() [L944] tmp = isMethaneLevelCritical() [L946] COND FALSE !(\read(tmp)) [L950] CALL, EXPR getWaterLevel() [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); [L950] RET, EXPR getWaterLevel() [L950] tmp___0 = getWaterLevel() [L952] COND TRUE tmp___0 == 2 [L954] CALL, EXPR isPumpRunning() [L763] int retValue_acc ; [L766] retValue_acc = pumpRunning [L767] return (retValue_acc); [L954] RET, EXPR isPumpRunning() [L954] tmp___1 = isPumpRunning() [L956] COND FALSE !(\read(tmp___1)) [L960] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 648 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1333 SDtfs, 2080 SDslu, 1509 SDs, 0 SdLazy, 3913 SolverSat, 715 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1157occurred 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: 1.7s 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...