/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_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:00:32,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:00:32,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:00:32,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:00:32,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:00:32,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:00:32,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:00:32,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:00:32,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:00:32,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:00:32,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:00:32,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:00:32,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:00:32,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:00:32,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:00:32,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:00:32,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:00:32,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:00:32,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:00:32,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:00:32,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:00:32,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:00:32,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:00:32,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:00:32,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:00:32,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:00:32,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:00:32,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:00:32,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:00:32,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:00:32,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:00:32,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:00:32,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:00:32,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:00:32,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:00:32,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:00:32,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:00:32,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:00:32,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:00:32,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:00:32,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:00:32,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:00:32,168 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:00:32,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:00:32,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:00:32,171 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:00:32,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:00:32,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:00:32,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:00:32,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:00:32,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:00:32,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:00:32,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:00:32,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:00:32,173 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:00:32,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:00:32,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:00:32,177 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:00:32,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:00:32,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:00:32,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:32,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:00:32,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:00:32,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:00:32,178 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:00:32,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:00:32,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:00:32,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:00:32,615 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:00:32,616 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:00:32,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2021-02-21 19:00:32,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f6ab1c6/73616e53762e41559a73697ecc58cff1/FLAG3a749b78d [2021-02-21 19:00:33,449 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:00:33,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2021-02-21 19:00:33,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f6ab1c6/73616e53762e41559a73697ecc58cff1/FLAG3a749b78d [2021-02-21 19:00:33,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f6ab1c6/73616e53762e41559a73697ecc58cff1 [2021-02-21 19:00:33,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:00:33,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:00:33,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:33,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:00:33,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:00:33,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:33" (1/1) ... [2021-02-21 19:00:33,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606b9205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:33, skipping insertion in model container [2021-02-21 19:00:33,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:33" (1/1) ... [2021-02-21 19:00:33,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:00:33,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:00:34,129 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_product60.cil.c[15798,15811] [2021-02-21 19:00:34,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:34,161 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:00:34,258 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_product60.cil.c[15798,15811] [2021-02-21 19:00:34,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:34,324 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:00:34,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34 WrapperNode [2021-02-21 19:00:34,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:34,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:00:34,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:00:34,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:00:34,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:00:34,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:00:34,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:00:34,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:00:34,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:00:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:00:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:00:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:00:34,568 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:00:34,568 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:00:34,568 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:34,569 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:00:34,569 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:00:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:00:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:00:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:00:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:00:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:00:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:00:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:00:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:00:34,572 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:00:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:00:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:00:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:00:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:00:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:00:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:00:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:00:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:00:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:00:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:00:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:00:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:00:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:00:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:00:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:00:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:00:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:00:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:00:34,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:00:34,579 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:00:34,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:00:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:00:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:00:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:00:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:00:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:00:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:00:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:00:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:00:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:00:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:00:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:00:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:00:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:00:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:00:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:00:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:00:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:00:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:00:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:00:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:00:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:00:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:00:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:00:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:00:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:00:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:00:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:00:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:00:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:00:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:00:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:00:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:00:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:00:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:00:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:00:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:00:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:00:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:00:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:00:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:00:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:00:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:00:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:00:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:00:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:00:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:00:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:00:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:00:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:00:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:00:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:00:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:00:35,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:00:35,956 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:00:35,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:35 BoogieIcfgContainer [2021-02-21 19:00:35,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:00:35,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:00:35,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:00:35,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:00:35,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:00:33" (1/3) ... [2021-02-21 19:00:35,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac516ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:35, skipping insertion in model container [2021-02-21 19:00:35,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34" (2/3) ... [2021-02-21 19:00:35,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac516ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:35, skipping insertion in model container [2021-02-21 19:00:35,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:35" (3/3) ... [2021-02-21 19:00:35,969 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2021-02-21 19:00:35,976 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:00:35,982 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:00:36,002 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:00:36,029 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:00:36,029 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:00:36,029 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:00:36,029 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:00:36,029 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:00:36,029 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:00:36,030 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:00:36,030 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:00:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states. [2021-02-21 19:00:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 19:00:36,085 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:36,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:36,087 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash -132092640, now seen corresponding path program 1 times [2021-02-21 19:00:36,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:36,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486216139] [2021-02-21 19:00:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:36,200 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:36,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:36,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:36,911 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:36,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:37,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:37,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:37,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:37,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:37,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:37,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:37,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:37,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:37,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:37,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:37,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:37,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:37,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:00:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:37,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:37,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:37,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:37,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:37,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:00:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:37,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:37,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:37,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486216139] [2021-02-21 19:00:37,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:37,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:00:37,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994632064] [2021-02-21 19:00:37,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:00:37,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:37,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:00:37,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:37,313 INFO L87 Difference]: Start difference. First operand 356 states. Second operand 3 states. [2021-02-21 19:00:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:39,264 INFO L93 Difference]: Finished difference Result 576 states and 679 transitions. [2021-02-21 19:00:39,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:00:39,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 19:00:39,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:39,302 INFO L225 Difference]: With dead ends: 576 [2021-02-21 19:00:39,303 INFO L226 Difference]: Without dead ends: 350 [2021-02-21 19:00:39,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-02-21 19:00:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 304. [2021-02-21 19:00:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2021-02-21 19:00:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 331 transitions. [2021-02-21 19:00:39,552 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 331 transitions. Word has length 158 [2021-02-21 19:00:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:39,553 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 331 transitions. [2021-02-21 19:00:39,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:00:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 331 transitions. [2021-02-21 19:00:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 19:00:39,558 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:39,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:39,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:00:39,559 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:39,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1542571510, now seen corresponding path program 1 times [2021-02-21 19:00:39,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:39,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789227288] [2021-02-21 19:00:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:39,566 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:39,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:39,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:39,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:39,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:39,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:39,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,003 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:40,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:40,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:40,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:40,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:40,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:40,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:40,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:40,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:40,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:40,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 19:00:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:40,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:40,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:00:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:40,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:40,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:00:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:40,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:40,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:40,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789227288] [2021-02-21 19:00:40,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:40,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:00:40,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221257136] [2021-02-21 19:00:40,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:00:40,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:40,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:00:40,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:00:40,135 INFO L87 Difference]: Start difference. First operand 304 states and 331 transitions. Second operand 4 states. [2021-02-21 19:00:40,836 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:42,297 INFO L93 Difference]: Finished difference Result 482 states and 541 transitions. [2021-02-21 19:00:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:00:42,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 19:00:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:42,310 INFO L225 Difference]: With dead ends: 482 [2021-02-21 19:00:42,311 INFO L226 Difference]: Without dead ends: 333 [2021-02-21 19:00:42,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:00:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-02-21 19:00:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 294. [2021-02-21 19:00:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2021-02-21 19:00:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 318 transitions. [2021-02-21 19:00:42,463 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 318 transitions. Word has length 159 [2021-02-21 19:00:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:42,464 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 318 transitions. [2021-02-21 19:00:42,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:00:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 318 transitions. [2021-02-21 19:00:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 19:00:42,467 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:42,467 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] [2021-02-21 19:00:42,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:00:42,468 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:42,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1968841679, now seen corresponding path program 1 times [2021-02-21 19:00:42,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:42,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073522780] [2021-02-21 19:00:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:42,473 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:42,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:42,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:42,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:42,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:42,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:42,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:42,915 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:42,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:42,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:42,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:42,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:42,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:42,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:00:43,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:00:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:00:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:43,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:00:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 19:00:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 19:00:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:43,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:43,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:43,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073522780] [2021-02-21 19:00:43,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:43,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:00:43,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286992400] [2021-02-21 19:00:43,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:00:43,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:43,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:00:43,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:00:43,132 INFO L87 Difference]: Start difference. First operand 294 states and 318 transitions. Second operand 10 states. [2021-02-21 19:00:43,848 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:44,283 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:00:44,684 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:00:45,079 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:45,497 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:45,880 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:46,948 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:50,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:50,592 INFO L93 Difference]: Finished difference Result 822 states and 950 transitions. [2021-02-21 19:00:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:00:50,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 19:00:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:50,600 INFO L225 Difference]: With dead ends: 822 [2021-02-21 19:00:50,600 INFO L226 Difference]: Without dead ends: 643 [2021-02-21 19:00:50,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:00:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-02-21 19:00:50,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 544. [2021-02-21 19:00:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2021-02-21 19:00:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 607 transitions. [2021-02-21 19:00:50,880 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 607 transitions. Word has length 172 [2021-02-21 19:00:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:50,881 INFO L480 AbstractCegarLoop]: Abstraction has 544 states and 607 transitions. [2021-02-21 19:00:50,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:00:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 607 transitions. [2021-02-21 19:00:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 19:00:50,885 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:50,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:50,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:00:50,886 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:50,887 INFO L82 PathProgramCache]: Analyzing trace with hash -852185042, now seen corresponding path program 1 times [2021-02-21 19:00:50,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:50,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210658146] [2021-02-21 19:00:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:50,890 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,371 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:00:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:00:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 19:00:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 19:00:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:51,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210658146] [2021-02-21 19:00:51,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:51,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:00:51,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145831266] [2021-02-21 19:00:51,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:00:51,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:51,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:00:51,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:00:51,547 INFO L87 Difference]: Start difference. First operand 544 states and 607 transitions. Second operand 9 states. [2021-02-21 19:00:52,190 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:54,563 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:55,021 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:55,536 WARN L202 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:56,127 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:56,516 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:56,934 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:57,348 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:58,943 INFO L93 Difference]: Finished difference Result 1492 states and 1778 transitions. [2021-02-21 19:00:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 19:00:58,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 19:00:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:58,952 INFO L225 Difference]: With dead ends: 1492 [2021-02-21 19:00:58,952 INFO L226 Difference]: Without dead ends: 1063 [2021-02-21 19:00:58,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 19:00:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-02-21 19:00:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 956. [2021-02-21 19:00:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2021-02-21 19:00:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1090 transitions. [2021-02-21 19:00:59,358 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1090 transitions. Word has length 177 [2021-02-21 19:00:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:59,358 INFO L480 AbstractCegarLoop]: Abstraction has 956 states and 1090 transitions. [2021-02-21 19:00:59,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:00:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1090 transitions. [2021-02-21 19:00:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:00:59,364 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:59,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:59,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:00:59,365 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:59,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:59,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1409559926, now seen corresponding path program 1 times [2021-02-21 19:00:59,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:59,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070985136] [2021-02-21 19:00:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:59,369 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,757 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:59,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:00:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 19:00:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 19:00:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 19:00:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:59,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:59,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:59,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070985136] [2021-02-21 19:00:59,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:59,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:00:59,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998938282] [2021-02-21 19:00:59,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:00:59,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:59,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:00:59,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:00:59,943 INFO L87 Difference]: Start difference. First operand 956 states and 1090 transitions. Second operand 6 states. [2021-02-21 19:01:00,583 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:03,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:03,541 INFO L93 Difference]: Finished difference Result 2136 states and 2549 transitions. [2021-02-21 19:01:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:01:03,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 19:01:03,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:03,551 INFO L225 Difference]: With dead ends: 2136 [2021-02-21 19:01:03,551 INFO L226 Difference]: Without dead ends: 1295 [2021-02-21 19:01:03,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:01:03,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-02-21 19:01:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1195. [2021-02-21 19:01:04,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2021-02-21 19:01:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1358 transitions. [2021-02-21 19:01:04,064 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1358 transitions. Word has length 182 [2021-02-21 19:01:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:04,065 INFO L480 AbstractCegarLoop]: Abstraction has 1195 states and 1358 transitions. [2021-02-21 19:01:04,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:01:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1358 transitions. [2021-02-21 19:01:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:01:04,069 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:04,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:01:04,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:01:04,069 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1993496595, now seen corresponding path program 1 times [2021-02-21 19:01:04,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:04,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955446266] [2021-02-21 19:01:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:04,073 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:01:04,150 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:01:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:01:04,227 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:01:04,482 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 19:01:04,482 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 19:01:04,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 19:01:04,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 07:01:04 BoogieIcfgContainer [2021-02-21 19:01:04,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 19:01:04,511 INFO L168 Benchmark]: Toolchain (without parser) took 30804.58 ms. Allocated memory was 151.0 MB in the beginning and 697.3 MB in the end (delta: 546.3 MB). Free memory was 126.4 MB in the beginning and 650.0 MB in the end (delta: -523.5 MB). Peak memory consumption was 349.9 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:04,512 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 19:01:04,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.40 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:04,513 INFO L168 Benchmark]: Boogie Preprocessor took 124.36 ms. Allocated memory is still 151.0 MB. Free memory was 103.4 MB in the beginning and 99.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:04,513 INFO L168 Benchmark]: RCFGBuilder took 1508.58 ms. Allocated memory is still 151.0 MB. Free memory was 99.3 MB in the beginning and 70.0 MB in the end (delta: 29.3 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:04,514 INFO L168 Benchmark]: TraceAbstraction took 28548.68 ms. Allocated memory was 151.0 MB in the beginning and 697.3 MB in the end (delta: 546.3 MB). Free memory was 69.5 MB in the beginning and 650.0 MB in the end (delta: -580.5 MB). Peak memory consumption was 292.5 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:04,516 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 151.0 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 606.40 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 124.36 ms. Allocated memory is still 151.0 MB. Free memory was 103.4 MB in the beginning and 99.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1508.58 ms. Allocated memory is still 151.0 MB. Free memory was 99.3 MB in the beginning and 70.0 MB in the end (delta: 29.3 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28548.68 ms. Allocated memory was 151.0 MB in the beginning and 697.3 MB in the end (delta: 546.3 MB). Free memory was 69.5 MB in the beginning and 650.0 MB in the end (delta: -580.5 MB). Peak memory consumption was 292.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L126] int pumpRunning = 0; [L127] int systemActive = 1; [L570] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L917] int cleanupTimeShifts = 4; [L990] int retValue_acc ; [L991] int tmp ; [L995] FCALL select_helpers() [L996] FCALL select_features() [L997] CALL, EXPR valid_product() [L805] int retValue_acc ; [L808] retValue_acc = 1 [L809] return (retValue_acc); [L997] RET, EXPR valid_product() [L997] tmp = valid_product() [L999] COND TRUE \read(tmp) [L1001] FCALL setup() [L1002] CALL runTest() [L984] CALL test() [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 [L58] COND TRUE 1 [L60] COND TRUE splverifierCounter < 4 [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) [L70] CALL waterRise() [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L70] RET waterRise() [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND FALSE !(\read(tmp___2)) [L94] tmp___1 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___1) [L98] CALL stopSystem() [L345] COND FALSE !(\read(pumpRunning)) [L352] systemActive = 0 [L98] RET stopSystem() [L105] CALL timeShift() [L134] COND FALSE !(\read(pumpRunning)) [L141] COND FALSE !(\read(systemActive)) [L149] CALL __utac_acc__Specification3_spec__1() [L368] int tmp ; [L369] int tmp___0 ; [L370] int tmp___1 ; [L374] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L374] RET, EXPR isMethaneLevelCritical() [L374] tmp = isMethaneLevelCritical() [L376] COND FALSE !(\read(tmp)) [L380] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L380] RET, EXPR getWaterLevel() [L380] tmp___0 = getWaterLevel() [L382] COND TRUE tmp___0 == 2 [L384] CALL, EXPR isPumpRunning() [L259] int retValue_acc ; [L262] retValue_acc = pumpRunning [L263] return (retValue_acc); [L384] RET, EXPR isPumpRunning() [L384] tmp___1 = isPumpRunning() [L386] COND FALSE !(\read(tmp___1)) [L390] CALL __automaton_fail() [L771] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 671 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1451 SDtfs, 2471 SDslu, 1698 SDs, 0 SdLazy, 4230 SolverSat, 849 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1195occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 391 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...