/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:23:09,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:23:09,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:23:09,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:23:09,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:23:09,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:23:09,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:23:09,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:23:09,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:23:09,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:23:09,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:23:09,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:23:09,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:23:09,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:23:09,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:23:09,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:23:09,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:23:09,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:23:09,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:23:09,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:23:09,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:23:09,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:23:09,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:23:09,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:23:09,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:23:09,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:23:09,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:23:09,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:23:09,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:23:09,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:23:09,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:23:09,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:23:09,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:23:09,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:23:09,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:23:09,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:23:09,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:23:09,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:23:09,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:23:09,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:23:09,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:23:09,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:23:09,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:23:09,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:23:09,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:23:09,923 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:23:09,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:23:09,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:23:09,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:23:09,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:23:09,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:23:09,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:23:09,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:23:09,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:23:09,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:23:09,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:23:09,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:23:09,927 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:23:09,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:23:09,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:23:09,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:23:09,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:23:09,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:23:09,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:23:09,928 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:23:10,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:23:10,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:23:10,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:23:10,408 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:23:10,409 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:23:10,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2021-02-23 16:23:10,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277d8bb4a/4192e44eeacd4fc78e40f664cc92e132/FLAG1a5352865 [2021-02-23 16:23:11,172 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:23:11,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2021-02-23 16:23:11,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277d8bb4a/4192e44eeacd4fc78e40f664cc92e132/FLAG1a5352865 [2021-02-23 16:23:11,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277d8bb4a/4192e44eeacd4fc78e40f664cc92e132 [2021-02-23 16:23:11,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:23:11,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:23:11,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:23:11,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:23:11,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:23:11,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:23:11" (1/1) ... [2021-02-23 16:23:11,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f9abec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:11, skipping insertion in model container [2021-02-23 16:23:11,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:23:11" (1/1) ... [2021-02-23 16:23:11,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:23:11,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:23:11,823 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_product17.cil.c[12347,12360] [2021-02-23 16:23:11,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:23:11,927 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:23:12,053 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_product17.cil.c[12347,12360] [2021-02-23 16:23:12,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:23:12,116 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:23:12,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12 WrapperNode [2021-02-23 16:23:12,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:23:12,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:23:12,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:23:12,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:23:12,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (1/1) ... [2021-02-23 16:23:12,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (1/1) ... [2021-02-23 16:23:12,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (1/1) ... [2021-02-23 16:23:12,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (1/1) ... [2021-02-23 16:23:12,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (1/1) ... [2021-02-23 16:23:12,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (1/1) ... [2021-02-23 16:23:12,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (1/1) ... [2021-02-23 16:23:12,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:23:12,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:23:12,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:23:12,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:23:12,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:23:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:23:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:23:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:23:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:23:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:23:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:23:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:23:12,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:23:12,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:23:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:23:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:23:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:23:12,399 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:23:12,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:23:12,399 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:23:12,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:23:12,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:23:12,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:23:12,401 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:23:12,401 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:23:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:23:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:23:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:23:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:23:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:23:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:23:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:23:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:23:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:23:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:23:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:23:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:23:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:23:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:23:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:23:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:23:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:23:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:23:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:23:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:23:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:23:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:23:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:23:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:23:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:23:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:23:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:23:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:23:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:23:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:23:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:23:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:23:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:23:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:23:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:23:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:23:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:23:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:23:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:23:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:23:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:23:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:23:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:23:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:23:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:23:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:23:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:23:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:23:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:23:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:23:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:23:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:23:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:23:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:23:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:23:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:23:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:23:12,413 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:23:12,413 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:23:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:23:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:23:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:23:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:23:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:23:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:23:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:23:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:23:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:23:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:23:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:23:13,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:23:13,872 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:23:13,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:23:13 BoogieIcfgContainer [2021-02-23 16:23:13,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:23:13,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:23:13,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:23:13,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:23:13,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:23:11" (1/3) ... [2021-02-23 16:23:13,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e34172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:23:13, skipping insertion in model container [2021-02-23 16:23:13,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:12" (2/3) ... [2021-02-23 16:23:13,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e34172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:23:13, skipping insertion in model container [2021-02-23 16:23:13,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:23:13" (3/3) ... [2021-02-23 16:23:13,884 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2021-02-23 16:23:13,891 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:23:13,897 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:23:13,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:23:13,941 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:23:13,941 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:23:13,941 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:23:13,941 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:23:13,942 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:23:13,942 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:23:13,942 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:23:13,942 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:23:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2021-02-23 16:23:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:23:13,986 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:13,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:13,987 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:13,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:13,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1853223525, now seen corresponding path program 1 times [2021-02-23 16:23:14,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:14,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775613421] [2021-02-23 16:23:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:14,091 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:14,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:14,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:14,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:14,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:14,951 WARN L202 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:14,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:23:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:23:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:23:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:15,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775613421] [2021-02-23 16:23:15,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:15,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:23:15,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099195365] [2021-02-23 16:23:15,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:23:15,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:15,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:23:15,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:23:15,184 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2021-02-23 16:23:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:16,745 INFO L93 Difference]: Finished difference Result 441 states and 523 transitions. [2021-02-23 16:23:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:23:16,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:23:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:16,763 INFO L225 Difference]: With dead ends: 441 [2021-02-23 16:23:16,764 INFO L226 Difference]: Without dead ends: 279 [2021-02-23 16:23:16,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:23:16,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-23 16:23:16,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 240. [2021-02-23 16:23:16,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-23 16:23:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 258 transitions. [2021-02-23 16:23:16,955 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 258 transitions. Word has length 158 [2021-02-23 16:23:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:16,958 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 258 transitions. [2021-02-23 16:23:16,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:23:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 258 transitions. [2021-02-23 16:23:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:23:16,971 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:16,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:16,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:23:16,972 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:16,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1839669217, now seen corresponding path program 1 times [2021-02-23 16:23:16,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:16,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382840978] [2021-02-23 16:23:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:16,982 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:17,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,539 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:23:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:23:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:23:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:17,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:17,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:17,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382840978] [2021-02-23 16:23:17,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:17,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:23:17,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172698565] [2021-02-23 16:23:17,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:23:17,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:17,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:23:17,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:23:17,666 INFO L87 Difference]: Start difference. First operand 240 states and 258 transitions. Second operand 4 states. [2021-02-23 16:23:18,444 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:23:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:19,341 INFO L93 Difference]: Finished difference Result 357 states and 397 transitions. [2021-02-23 16:23:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:23:19,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:23:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:19,346 INFO L225 Difference]: With dead ends: 357 [2021-02-23 16:23:19,346 INFO L226 Difference]: Without dead ends: 262 [2021-02-23 16:23:19,348 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 [2021-02-23 16:23:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-23 16:23:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-23 16:23:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-23 16:23:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 245 transitions. [2021-02-23 16:23:19,461 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 245 transitions. Word has length 159 [2021-02-23 16:23:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:19,462 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 245 transitions. [2021-02-23 16:23:19,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:23:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 245 transitions. [2021-02-23 16:23:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:23:19,464 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:19,465 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] [2021-02-23 16:23:19,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:23:19,465 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:19,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2064716305, now seen corresponding path program 1 times [2021-02-23 16:23:19,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:19,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326568017] [2021-02-23 16:23:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:19,470 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:19,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:19,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:19,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:19,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:23:19,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:19,872 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:19,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:19,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:23:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:19,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:19,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:19,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:19,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:19,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:19,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:23:19,989 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:23:19,990 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:23:20,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:20,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:20,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:20,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:23:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:20,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:20,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:20,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:23:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:20,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:20,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:23:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:20,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:20,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:20,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326568017] [2021-02-23 16:23:20,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:20,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:23:20,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069124886] [2021-02-23 16:23:20,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:23:20,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:20,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:23:20,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:23:20,106 INFO L87 Difference]: Start difference. First operand 230 states and 245 transitions. Second operand 9 states. [2021-02-23 16:23:20,707 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:21,171 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:23:21,541 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:23:21,900 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:22,259 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:23:22,612 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:24,009 INFO L93 Difference]: Finished difference Result 377 states and 422 transitions. [2021-02-23 16:23:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:23:24,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:23:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:24,013 INFO L225 Difference]: With dead ends: 377 [2021-02-23 16:23:24,013 INFO L226 Difference]: Without dead ends: 262 [2021-02-23 16:23:24,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:23:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-23 16:23:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-23 16:23:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-23 16:23:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 244 transitions. [2021-02-23 16:23:24,154 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 244 transitions. Word has length 168 [2021-02-23 16:23:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:24,155 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 244 transitions. [2021-02-23 16:23:24,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:23:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 244 transitions. [2021-02-23 16:23:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 16:23:24,158 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:24,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:24,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:23:24,159 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1932849306, now seen corresponding path program 1 times [2021-02-23 16:23:24,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:24,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873335459] [2021-02-23 16:23:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:24,164 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,621 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:23:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:23:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:23:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:23:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:23:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:24,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:23:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:24,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:24,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:24,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873335459] [2021-02-23 16:23:24,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:24,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:23:24,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011531967] [2021-02-23 16:23:24,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:23:24,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:24,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:23:24,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:23:24,855 INFO L87 Difference]: Start difference. First operand 230 states and 244 transitions. Second operand 9 states. [2021-02-23 16:23:25,473 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:27,189 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:27,578 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:23:28,007 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:28,447 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:28,833 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:23:29,228 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:29,584 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:30,285 INFO L93 Difference]: Finished difference Result 527 states and 618 transitions. [2021-02-23 16:23:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:23:30,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-23 16:23:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:30,291 INFO L225 Difference]: With dead ends: 527 [2021-02-23 16:23:30,292 INFO L226 Difference]: Without dead ends: 412 [2021-02-23 16:23:30,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:23:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-02-23 16:23:30,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 337. [2021-02-23 16:23:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-02-23 16:23:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 368 transitions. [2021-02-23 16:23:30,447 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 368 transitions. Word has length 176 [2021-02-23 16:23:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:30,448 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 368 transitions. [2021-02-23 16:23:30,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:23:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 368 transitions. [2021-02-23 16:23:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-23 16:23:30,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:30,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:30,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:23:30,452 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:30,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:30,453 INFO L82 PathProgramCache]: Analyzing trace with hash -172672318, now seen corresponding path program 1 times [2021-02-23 16:23:30,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:30,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329648927] [2021-02-23 16:23:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:30,456 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:23:30,532 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:23:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:23:30,610 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:23:30,814 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:23:30,814 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:23:30,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:23:30,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:23:30 BoogieIcfgContainer [2021-02-23 16:23:30,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:23:30,848 INFO L168 Benchmark]: Toolchain (without parser) took 19368.27 ms. Allocated memory was 156.2 MB in the beginning and 457.2 MB in the end (delta: 300.9 MB). Free memory was 131.4 MB in the beginning and 431.9 MB in the end (delta: -300.5 MB). Peak memory consumption was 272.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:30,848 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:23:30,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.12 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 110.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:30,849 INFO L168 Benchmark]: Boogie Preprocessor took 129.26 ms. Allocated memory is still 156.2 MB. Free memory was 110.4 MB in the beginning and 138.4 MB in the end (delta: -28.0 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:30,850 INFO L168 Benchmark]: RCFGBuilder took 1627.31 ms. Allocated memory is still 156.2 MB. Free memory was 138.4 MB in the beginning and 97.3 MB in the end (delta: 41.1 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:30,850 INFO L168 Benchmark]: TraceAbstraction took 16969.73 ms. Allocated memory was 156.2 MB in the beginning and 457.2 MB in the end (delta: 300.9 MB). Free memory was 96.7 MB in the beginning and 431.9 MB in the end (delta: -335.2 MB). Peak memory consumption was 236.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:30,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 624.12 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 110.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 129.26 ms. Allocated memory is still 156.2 MB. Free memory was 110.4 MB in the beginning and 138.4 MB in the end (delta: -28.0 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1627.31 ms. Allocated memory is still 156.2 MB. Free memory was 138.4 MB in the beginning and 97.3 MB in the end (delta: 41.1 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16969.73 ms. Allocated memory was 156.2 MB in the beginning and 457.2 MB in the end (delta: 300.9 MB). Free memory was 96.7 MB in the beginning and 431.9 MB in the end (delta: -335.2 MB). Peak memory consumption was 236.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 508]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L584] int pumpRunning = 0; [L585] int systemActive = 1; [L737] int cleanupTimeShifts = 4; [L813] int retValue_acc ; [L814] int tmp ; [L818] FCALL select_helpers() [L819] FCALL select_features() [L820] CALL, EXPR valid_product() [L862] int retValue_acc ; [L865] retValue_acc = 1 [L866] return (retValue_acc); [L820] RET, EXPR valid_product() [L820] tmp = valid_product() [L822] COND TRUE \read(tmp) [L824] FCALL setup() [L825] CALL runTest() [L804] CALL test() [L516] int splverifierCounter ; [L517] int tmp ; [L518] int tmp___0 ; [L519] int tmp___1 ; [L520] int tmp___2 ; [L523] splverifierCounter = 0 [L525] COND TRUE 1 [L527] COND TRUE splverifierCounter < 4 [L533] tmp = __VERIFIER_nondet_int() [L535] COND TRUE \read(tmp) [L537] CALL waterRise() [L433] COND TRUE waterLevel < 2 [L434] waterLevel = waterLevel + 1 [L537] RET waterRise() [L543] tmp___0 = __VERIFIER_nondet_int() [L545] COND FALSE !(\read(tmp___0)) [L553] tmp___2 = __VERIFIER_nondet_int() [L555] COND TRUE \read(tmp___2) [L568] CALL timeShift() [L592] COND FALSE !(\read(pumpRunning)) [L599] COND TRUE \read(systemActive) [L601] CALL processEnvironment() [L621] int tmp ; [L624] COND FALSE !(\read(pumpRunning)) [L639] FCALL processEnvironment__wrappee__base() [L601] RET processEnvironment() [L607] CALL __utac_acc__Specification3_spec__1() [L872] int tmp ; [L873] int tmp___0 ; [L874] int tmp___1 ; [L878] CALL, EXPR isMethaneLevelCritical() [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L878] RET, EXPR isMethaneLevelCritical() [L878] tmp = isMethaneLevelCritical() [L880] COND FALSE !(\read(tmp)) [L884] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L884] RET, EXPR getWaterLevel() [L884] tmp___0 = getWaterLevel() [L886] COND TRUE tmp___0 == 2 [L888] CALL, EXPR isPumpRunning() [L673] int retValue_acc ; [L676] retValue_acc = pumpRunning [L677] return (retValue_acc); [L888] RET, EXPR isPumpRunning() [L888] tmp___1 = isPumpRunning() [L890] COND FALSE !(\read(tmp___1)) [L894] CALL __automaton_fail() [L508] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 877 SDtfs, 938 SDslu, 1250 SDs, 0 SdLazy, 2277 SolverSat, 265 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 178 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...