/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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:02:26,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:02:26,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:02:26,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:02:26,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:02:26,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:02:26,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:02:26,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:02:26,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:02:26,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:02:26,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:02:26,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:02:26,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:02:26,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:02:26,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:02:26,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:02:26,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:02:26,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:02:26,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:02:26,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:02:26,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:02:26,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:02:26,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:02:26,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:02:26,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:02:26,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:02:26,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:02:26,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:02:26,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:02:26,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:02:26,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:02:26,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:02:26,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:02:26,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:02:26,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:02:26,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:02:26,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:02:26,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:02:26,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:02:26,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:02:26,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:02:26,184 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 01:02:26,208 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:02:26,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:02:26,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:02:26,214 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:02:26,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:02:26,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:02:26,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:02:26,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:02:26,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:02:26,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:02:26,216 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:02:26,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:02:26,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:02:26,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:02:26,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:02:26,218 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:02:26,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:02:26,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:02:26,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:02:26,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:02:26,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:02:26,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:02:26,219 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:02:26,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:02:26,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:02:26,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:02:26,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:02:26,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:02:26,664 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:02:26,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2021-02-22 01:02:26,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75caf012/b41492ffb27d42dc980a2b53cdd452b2/FLAG87171af43 [2021-02-22 01:02:27,379 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:02:27,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2021-02-22 01:02:27,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75caf012/b41492ffb27d42dc980a2b53cdd452b2/FLAG87171af43 [2021-02-22 01:02:27,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75caf012/b41492ffb27d42dc980a2b53cdd452b2 [2021-02-22 01:02:27,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:02:27,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:02:27,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:02:27,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:02:27,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:02:27,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:02:27" (1/1) ... [2021-02-22 01:02:27,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61697452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:27, skipping insertion in model container [2021-02-22 01:02:27,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:02:27" (1/1) ... [2021-02-22 01:02:27,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:02:27,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:02:28,175 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] [2021-02-22 01:02:28,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:02:28,218 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:02:28,313 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] [2021-02-22 01:02:28,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:02:28,370 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:02:28,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28 WrapperNode [2021-02-22 01:02:28,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:02:28,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:02:28,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:02:28,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:02:28,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (1/1) ... [2021-02-22 01:02:28,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (1/1) ... [2021-02-22 01:02:28,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (1/1) ... [2021-02-22 01:02:28,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (1/1) ... [2021-02-22 01:02:28,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (1/1) ... [2021-02-22 01:02:28,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (1/1) ... [2021-02-22 01:02:28,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (1/1) ... [2021-02-22 01:02:28,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:02:28,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:02:28,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:02:28,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:02:28,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (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 01:02:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:02:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:02:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:02:28,581 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:02:28,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:02:28,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:02:28,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:02:28,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:02:28,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:02:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:02:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:02:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:02:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:02:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:02:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:02:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:02:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:02:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:02:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:02:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:02:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:02:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:02:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:02:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:02:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:02:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:02:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:02:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:02:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:02:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:02:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:02:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:02:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:02:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:02:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:02:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:02:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:02:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:02:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:02:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:02:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:02:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:02:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:02:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:02:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:02:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:02:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:02:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:02:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:02:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:02:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:02:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:02:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:02:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:02:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:02:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:02:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:02:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:02:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:02:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:02:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:02:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:02:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:02:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:02:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:02:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:02:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:02:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:02:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:02:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:02:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:02:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:02:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:02:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:02:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:02:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:02:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:02:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:02:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:02:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:02:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:02:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:02:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:02:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:02:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:02:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:02:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:02:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:02:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:02:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:02:29,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:02:29,672 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:02:29,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:02:29 BoogieIcfgContainer [2021-02-22 01:02:29,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:02:29,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:02:29,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:02:29,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:02:29,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:02:27" (1/3) ... [2021-02-22 01:02:29,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca9bb40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:02:29, skipping insertion in model container [2021-02-22 01:02:29,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:02:28" (2/3) ... [2021-02-22 01:02:29,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca9bb40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:02:29, skipping insertion in model container [2021-02-22 01:02:29,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:02:29" (3/3) ... [2021-02-22 01:02:29,684 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2021-02-22 01:02:29,691 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:02:29,696 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:02:29,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:02:29,739 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:02:29,739 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:02:29,739 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:02:29,739 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:02:29,740 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:02:29,740 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:02:29,740 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:02:29,740 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:02:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2021-02-22 01:02:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:02:29,783 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:29,784 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 01:02:29,784 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:29,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1853223525, now seen corresponding path program 1 times [2021-02-22 01:02:29,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:29,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696303338] [2021-02-22 01:02:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:29,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,651 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:02:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:02:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:02:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:02:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:02:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:02:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:02:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:02:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:02:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:30,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:30,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:30,950 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 01:02:30,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696303338] [2021-02-22 01:02:30,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:02:30,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:02:30,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104284538] [2021-02-22 01:02:30,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:02:30,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:02:30,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:02:30,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:02:30,985 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2021-02-22 01:02:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:02:32,571 INFO L93 Difference]: Finished difference Result 441 states and 523 transitions. [2021-02-22 01:02:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:02:32,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:02:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:02:32,589 INFO L225 Difference]: With dead ends: 441 [2021-02-22 01:02:32,589 INFO L226 Difference]: Without dead ends: 279 [2021-02-22 01:02:32,594 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 01:02:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-22 01:02:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 240. [2021-02-22 01:02:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-22 01:02:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 258 transitions. [2021-02-22 01:02:32,745 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 258 transitions. Word has length 158 [2021-02-22 01:02:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:02:32,746 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 258 transitions. [2021-02-22 01:02:32,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:02:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 258 transitions. [2021-02-22 01:02:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:02:32,751 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:32,752 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 01:02:32,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:02:32,752 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:32,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:32,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1839669217, now seen corresponding path program 1 times [2021-02-22 01:02:32,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:32,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865768073] [2021-02-22 01:02:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:32,758 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:32,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:32,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:32,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:32,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:32,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:32,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,248 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:02:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:02:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:33,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:33,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:02:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:33,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:33,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:02:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:33,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:33,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:02:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:33,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:33,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:02:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:33,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:33,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:02:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:33,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:33,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:02:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:33,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:33,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:02:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:33,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:33,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:33,354 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 01:02:33,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865768073] [2021-02-22 01:02:33,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:02:33,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:02:33,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270807472] [2021-02-22 01:02:33,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:02:33,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:02:33,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:02:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:02:33,357 INFO L87 Difference]: Start difference. First operand 240 states and 258 transitions. Second operand 4 states. [2021-02-22 01:02:34,095 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:02:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:02:35,008 INFO L93 Difference]: Finished difference Result 357 states and 397 transitions. [2021-02-22 01:02:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:02:35,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:02:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:02:35,013 INFO L225 Difference]: With dead ends: 357 [2021-02-22 01:02:35,013 INFO L226 Difference]: Without dead ends: 262 [2021-02-22 01:02:35,015 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 01:02:35,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-22 01:02:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-22 01:02:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-22 01:02:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 245 transitions. [2021-02-22 01:02:35,118 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 245 transitions. Word has length 159 [2021-02-22 01:02:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:02:35,119 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 245 transitions. [2021-02-22 01:02:35,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:02:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 245 transitions. [2021-02-22 01:02:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-22 01:02:35,122 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:35,122 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 01:02:35,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:02:35,122 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2064716305, now seen corresponding path program 1 times [2021-02-22 01:02:35,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:35,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244865633] [2021-02-22 01:02:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:35,127 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:35,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:35,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:35,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:02:35,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,628 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:02:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:02:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:02:35,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:02:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:02:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:02:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:02:35,839 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-22 01:02:35,841 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-22 01:02:35,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:02:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:02:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:02:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-22 01:02:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:35,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:35,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:35,976 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 01:02:35,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244865633] [2021-02-22 01:02:35,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:02:35,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:02:35,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469496104] [2021-02-22 01:02:35,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:02:35,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:02:35,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:02:35,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:02:35,987 INFO L87 Difference]: Start difference. First operand 230 states and 245 transitions. Second operand 9 states. [2021-02-22 01:02:36,701 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:02:37,113 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:02:37,521 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:02:37,876 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:38,255 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:02:38,608 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:02:39,950 INFO L93 Difference]: Finished difference Result 377 states and 422 transitions. [2021-02-22 01:02:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:02:39,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-22 01:02:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:02:39,954 INFO L225 Difference]: With dead ends: 377 [2021-02-22 01:02:39,954 INFO L226 Difference]: Without dead ends: 262 [2021-02-22 01:02:39,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:02:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-22 01:02:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-22 01:02:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-22 01:02:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 244 transitions. [2021-02-22 01:02:40,057 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 244 transitions. Word has length 168 [2021-02-22 01:02:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:02:40,058 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 244 transitions. [2021-02-22 01:02:40,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:02:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 244 transitions. [2021-02-22 01:02:40,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-22 01:02:40,062 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:40,062 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] [2021-02-22 01:02:40,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:02:40,062 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:40,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:40,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1932849306, now seen corresponding path program 1 times [2021-02-22 01:02:40,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:40,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47685588] [2021-02-22 01:02:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:40,067 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,446 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:02:40,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:02:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:02:40,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:02:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:02:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:02:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:02:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-22 01:02:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:02:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-22 01:02:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-22 01:02:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-22 01:02:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:40,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:40,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:40,698 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 01:02:40,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47685588] [2021-02-22 01:02:40,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:02:40,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:02:40,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201955396] [2021-02-22 01:02:40,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:02:40,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:02:40,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:02:40,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:02:40,703 INFO L87 Difference]: Start difference. First operand 230 states and 244 transitions. Second operand 9 states. [2021-02-22 01:02:41,353 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:02:43,103 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:43,512 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:02:43,943 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:44,350 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:02:44,718 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:02:45,126 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:45,502 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:02:46,183 INFO L93 Difference]: Finished difference Result 527 states and 618 transitions. [2021-02-22 01:02:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:02:46,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-22 01:02:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:02:46,192 INFO L225 Difference]: With dead ends: 527 [2021-02-22 01:02:46,193 INFO L226 Difference]: Without dead ends: 412 [2021-02-22 01:02:46,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:02:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-02-22 01:02:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 337. [2021-02-22 01:02:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-02-22 01:02:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 368 transitions. [2021-02-22 01:02:46,358 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 368 transitions. Word has length 176 [2021-02-22 01:02:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:02:46,359 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 368 transitions. [2021-02-22 01:02:46,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:02:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 368 transitions. [2021-02-22 01:02:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-22 01:02:46,362 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:46,362 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] [2021-02-22 01:02:46,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:02:46,363 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:46,363 INFO L82 PathProgramCache]: Analyzing trace with hash -172672318, now seen corresponding path program 1 times [2021-02-22 01:02:46,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:46,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965888783] [2021-02-22 01:02:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:46,367 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:02:46,442 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:02:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:02:46,513 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:02:46,699 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:02:46,700 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:02:46,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:02:46,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:02:46 BoogieIcfgContainer [2021-02-22 01:02:46,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:02:46,726 INFO L168 Benchmark]: Toolchain (without parser) took 19055.69 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 136.6 MB in the beginning and 325.0 MB in the end (delta: -188.4 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:46,727 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:02:46,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.38 ms. Allocated memory is still 161.5 MB. Free memory was 135.4 MB in the beginning and 115.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:46,728 INFO L168 Benchmark]: Boogie Preprocessor took 87.44 ms. Allocated memory is still 161.5 MB. Free memory was 115.0 MB in the beginning and 111.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:46,728 INFO L168 Benchmark]: RCFGBuilder took 1215.06 ms. Allocated memory is still 161.5 MB. Free memory was 111.1 MB in the beginning and 114.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:46,729 INFO L168 Benchmark]: TraceAbstraction took 17048.13 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 113.6 MB in the beginning and 325.0 MB in the end (delta: -211.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:46,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 679.38 ms. Allocated memory is still 161.5 MB. Free memory was 135.4 MB in the beginning and 115.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.44 ms. Allocated memory is still 161.5 MB. Free memory was 115.0 MB in the beginning and 111.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1215.06 ms. Allocated memory is still 161.5 MB. Free memory was 111.1 MB in the beginning and 114.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17048.13 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 113.6 MB in the beginning and 325.0 MB in the end (delta: -211.4 MB). Peak memory consumption was 31.9 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: 16.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.7s, 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...