/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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:59:18,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:59:18,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:59:18,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:59:18,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:59:18,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:59:18,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:59:18,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:59:18,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:59:18,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:59:18,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:59:18,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:59:18,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:59:18,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:59:18,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:59:18,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:59:18,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:59:18,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:59:18,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:59:18,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:59:18,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:59:18,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:59:18,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:59:18,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:59:18,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:59:18,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:59:18,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:59:18,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:59:18,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:59:18,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:59:18,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:59:18,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:59:18,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:59:18,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:59:18,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:59:18,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:59:18,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:59:18,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:59:18,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:59:18,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:59:18,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:59:18,130 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 18:59:18,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:59:18,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:59:18,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:59:18,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:59:18,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:59:18,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:59:18,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:59:18,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:59:18,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:59:18,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:59:18,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:59:18,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:59:18,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:59:18,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:59:18,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:59:18,149 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:59:18,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:59:18,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:59:18,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:59:18,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:59:18,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:59:18,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:59:18,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:59:18,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:59:18,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:59:18,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:59:18,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:59:18,534 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:59:18,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2021-02-21 18:59:18,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8383ddba4/89380351004e441aa6455f7d51b369ea/FLAG708be49c0 [2021-02-21 18:59:19,357 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:59:19,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2021-02-21 18:59:19,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8383ddba4/89380351004e441aa6455f7d51b369ea/FLAG708be49c0 [2021-02-21 18:59:19,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8383ddba4/89380351004e441aa6455f7d51b369ea [2021-02-21 18:59:19,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:59:19,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:59:19,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:59:19,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:59:19,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:59:19,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59fc34a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:19, skipping insertion in model container [2021-02-21 18:59:19,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:59:19" (1/1) ... [2021-02-21 18:59:19,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:59:19,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:59:19,954 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c[1281,1294] [2021-02-21 18:59:20,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:59:20,145 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:59:20,160 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c[1281,1294] [2021-02-21 18:59:20,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:59:20,329 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:59:20,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20 WrapperNode [2021-02-21 18:59:20,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:59:20,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:59:20,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:59:20,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:59:20,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (1/1) ... [2021-02-21 18:59:20,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (1/1) ... [2021-02-21 18:59:20,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (1/1) ... [2021-02-21 18:59:20,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (1/1) ... [2021-02-21 18:59:20,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (1/1) ... [2021-02-21 18:59:20,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (1/1) ... [2021-02-21 18:59:20,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (1/1) ... [2021-02-21 18:59:20,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:59:20,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:59:20,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:59:20,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:59:20,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (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 18:59:20,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:59:20,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:59:20,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:59:20,603 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:59:20,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:59:20,604 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:59:20,604 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:59:20,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:59:20,604 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:59:20,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:59:20,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:59:20,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:59:20,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:59:20,605 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:59:20,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:59:20,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:59:20,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:59:20,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:59:20,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:59:20,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:59:20,607 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:59:20,607 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:59:20,607 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:59:20,607 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 18:59:20,607 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:59:20,607 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:59:20,608 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:59:20,608 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:59:20,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:59:20,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:59:20,608 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:59:20,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:59:20,609 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:59:20,609 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:59:20,609 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:59:20,609 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:59:20,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:59:20,610 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:59:20,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:59:20,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:59:20,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:59:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:59:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:59:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:59:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:59:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:59:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:59:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:59:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:59:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:59:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:59:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:59:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:59:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:59:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:59:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:59:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:59:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:59:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:59:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:59:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:59:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:59:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:59:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:59:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:59:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:59:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:59:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:59:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:59:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:59:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:59:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:59:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:59:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:59:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:59:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:59:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:59:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:59:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:59:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:59:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:59:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:59:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:59:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 18:59:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:59:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:59:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:59:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:59:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:59:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:59:21,738 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:59:21,738 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:59:21,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:59:21 BoogieIcfgContainer [2021-02-21 18:59:21,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:59:21,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:59:21,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:59:21,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:59:21,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:59:19" (1/3) ... [2021-02-21 18:59:21,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5b560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:59:21, skipping insertion in model container [2021-02-21 18:59:21,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:20" (2/3) ... [2021-02-21 18:59:21,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5b560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:59:21, skipping insertion in model container [2021-02-21 18:59:21,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:59:21" (3/3) ... [2021-02-21 18:59:21,750 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2021-02-21 18:59:21,757 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:59:21,763 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:59:21,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:59:21,808 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:59:21,808 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:59:21,808 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:59:21,808 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:59:21,808 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:59:21,809 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:59:21,809 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:59:21,809 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:59:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states. [2021-02-21 18:59:21,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:59:21,855 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:21,856 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 18:59:21,856 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:21,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1629313999, now seen corresponding path program 1 times [2021-02-21 18:59:21,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:21,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726783521] [2021-02-21 18:59:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:21,948 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,714 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:59:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:59:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:59:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:22,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:22,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:22,929 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 18:59:22,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726783521] [2021-02-21 18:59:22,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:22,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:59:22,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141944233] [2021-02-21 18:59:22,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:59:22,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:22,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:59:22,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:59:22,955 INFO L87 Difference]: Start difference. First operand 333 states. Second operand 3 states. [2021-02-21 18:59:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:24,829 INFO L93 Difference]: Finished difference Result 529 states and 631 transitions. [2021-02-21 18:59:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:59:24,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:59:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:24,848 INFO L225 Difference]: With dead ends: 529 [2021-02-21 18:59:24,849 INFO L226 Difference]: Without dead ends: 326 [2021-02-21 18:59:24,854 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 18:59:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-02-21 18:59:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2021-02-21 18:59:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-21 18:59:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 308 transitions. [2021-02-21 18:59:25,047 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 308 transitions. Word has length 158 [2021-02-21 18:59:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:25,049 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 308 transitions. [2021-02-21 18:59:25,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:59:25,049 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 308 transitions. [2021-02-21 18:59:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:59:25,054 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:25,054 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 18:59:25,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:59:25,055 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:25,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1816359164, now seen corresponding path program 1 times [2021-02-21 18:59:25,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:25,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338035086] [2021-02-21 18:59:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:25,060 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:25,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,507 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:59:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:59:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:59:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:25,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:25,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:25,685 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 18:59:25,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338035086] [2021-02-21 18:59:25,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:25,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:59:25,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680642426] [2021-02-21 18:59:25,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:59:25,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:25,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:59:25,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:59:25,692 INFO L87 Difference]: Start difference. First operand 281 states and 308 transitions. Second operand 4 states. [2021-02-21 18:59:26,440 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:59:27,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:27,737 INFO L93 Difference]: Finished difference Result 439 states and 497 transitions. [2021-02-21 18:59:27,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:59:27,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:59:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:27,743 INFO L225 Difference]: With dead ends: 439 [2021-02-21 18:59:27,743 INFO L226 Difference]: Without dead ends: 309 [2021-02-21 18:59:27,746 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 18:59:27,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-02-21 18:59:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 271. [2021-02-21 18:59:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2021-02-21 18:59:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2021-02-21 18:59:27,879 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 159 [2021-02-21 18:59:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:27,880 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2021-02-21 18:59:27,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:59:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2021-02-21 18:59:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:59:27,883 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:27,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:59:27,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:59:27,884 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:27,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1677160890, now seen corresponding path program 1 times [2021-02-21 18:59:27,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:27,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863838504] [2021-02-21 18:59:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:27,889 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:28,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:28,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:28,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:28,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:28,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:28,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:28,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,395 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:59:28,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:59:28,541 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:59:28,542 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:59:28,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:59:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:59:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:59:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:28,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:28,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:28,613 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 18:59:28,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863838504] [2021-02-21 18:59:28,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:28,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:59:28,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505123945] [2021-02-21 18:59:28,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:59:28,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:28,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:59:28,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:59:28,615 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand 9 states. [2021-02-21 18:59:29,364 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:29,772 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:59:30,143 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:59:30,507 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:30,883 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:31,265 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:32,363 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:59:35,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:35,164 INFO L93 Difference]: Finished difference Result 729 states and 842 transitions. [2021-02-21 18:59:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:59:35,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:59:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:35,171 INFO L225 Difference]: With dead ends: 729 [2021-02-21 18:59:35,171 INFO L226 Difference]: Without dead ends: 573 [2021-02-21 18:59:35,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:59:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-02-21 18:59:35,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 502. [2021-02-21 18:59:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2021-02-21 18:59:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 565 transitions. [2021-02-21 18:59:35,450 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 565 transitions. Word has length 168 [2021-02-21 18:59:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:35,451 INFO L480 AbstractCegarLoop]: Abstraction has 502 states and 565 transitions. [2021-02-21 18:59:35,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:59:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 565 transitions. [2021-02-21 18:59:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:59:35,455 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:35,455 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 18:59:35,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:59:35,456 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:35,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:35,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1286669336, now seen corresponding path program 1 times [2021-02-21 18:59:35,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:35,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041510681] [2021-02-21 18:59:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:35,460 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,845 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:59:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:59:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:59:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 18:59:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:35,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:35,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 18:59:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:35,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:35,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:36,017 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 18:59:36,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041510681] [2021-02-21 18:59:36,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:36,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:59:36,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396826058] [2021-02-21 18:59:36,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:59:36,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:36,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:59:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:59:36,020 INFO L87 Difference]: Start difference. First operand 502 states and 565 transitions. Second operand 9 states. [2021-02-21 18:59:36,731 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:38,994 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:39,395 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:39,853 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:40,289 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:40,675 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:41,047 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:41,433 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:42,692 INFO L93 Difference]: Finished difference Result 1363 states and 1646 transitions. [2021-02-21 18:59:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:59:42,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 18:59:42,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:42,703 INFO L225 Difference]: With dead ends: 1363 [2021-02-21 18:59:42,703 INFO L226 Difference]: Without dead ends: 976 [2021-02-21 18:59:42,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:59:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-02-21 18:59:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 872. [2021-02-21 18:59:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2021-02-21 18:59:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1006 transitions. [2021-02-21 18:59:43,160 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1006 transitions. Word has length 177 [2021-02-21 18:59:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:43,162 INFO L480 AbstractCegarLoop]: Abstraction has 872 states and 1006 transitions. [2021-02-21 18:59:43,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:59:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1006 transitions. [2021-02-21 18:59:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:59:43,173 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:43,173 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 18:59:43,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:59:43,174 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1818383811, now seen corresponding path program 1 times [2021-02-21 18:59:43,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:43,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495186277] [2021-02-21 18:59:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:43,179 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:43,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:43,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:43,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:43,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:43,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:43,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,550 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:59:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:59:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:59:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:59:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 18:59:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:43,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:43,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:43,760 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 18:59:43,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495186277] [2021-02-21 18:59:43,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:43,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:59:43,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277803196] [2021-02-21 18:59:43,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:59:43,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:43,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:59:43,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:59:43,763 INFO L87 Difference]: Start difference. First operand 872 states and 1006 transitions. Second operand 6 states. [2021-02-21 18:59:44,415 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:47,098 INFO L93 Difference]: Finished difference Result 2011 states and 2421 transitions. [2021-02-21 18:59:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 18:59:47,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 18:59:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:47,106 INFO L225 Difference]: With dead ends: 2011 [2021-02-21 18:59:47,107 INFO L226 Difference]: Without dead ends: 1254 [2021-02-21 18:59:47,110 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 18:59:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-02-21 18:59:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1157. [2021-02-21 18:59:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2021-02-21 18:59:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1320 transitions. [2021-02-21 18:59:47,654 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1320 transitions. Word has length 182 [2021-02-21 18:59:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:47,654 INFO L480 AbstractCegarLoop]: Abstraction has 1157 states and 1320 transitions. [2021-02-21 18:59:47,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:59:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1320 transitions. [2021-02-21 18:59:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:59:47,658 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:47,658 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 18:59:47,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:59:47,659 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:47,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:47,659 INFO L82 PathProgramCache]: Analyzing trace with hash -320143715, now seen corresponding path program 1 times [2021-02-21 18:59:47,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:47,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745661688] [2021-02-21 18:59:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:47,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:59:47,743 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:59:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:59:47,817 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:59:48,012 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:59:48,012 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:59:48,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:59:48,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:59:48 BoogieIcfgContainer [2021-02-21 18:59:48,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:59:48,038 INFO L168 Benchmark]: Toolchain (without parser) took 28418.52 ms. Allocated memory was 169.9 MB in the beginning and 595.6 MB in the end (delta: 425.7 MB). Free memory was 144.8 MB in the beginning and 411.5 MB in the end (delta: -266.8 MB). Peak memory consumption was 159.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:48,038 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 169.9 MB. Free memory was 144.3 MB in the beginning and 144.3 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:59:48,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.56 ms. Allocated memory is still 169.9 MB. Free memory was 143.7 MB in the beginning and 122.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:48,039 INFO L168 Benchmark]: Boogie Preprocessor took 135.42 ms. Allocated memory is still 169.9 MB. Free memory was 122.3 MB in the beginning and 118.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:48,040 INFO L168 Benchmark]: RCFGBuilder took 1273.43 ms. Allocated memory was 169.9 MB in the beginning and 216.0 MB in the end (delta: 46.1 MB). Free memory was 118.4 MB in the beginning and 178.2 MB in the end (delta: -59.8 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:48,040 INFO L168 Benchmark]: TraceAbstraction took 26293.56 ms. Allocated memory was 216.0 MB in the beginning and 595.6 MB in the end (delta: 379.6 MB). Free memory was 177.7 MB in the beginning and 411.5 MB in the end (delta: -233.8 MB). Peak memory consumption was 145.8 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:48,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 169.9 MB. Free memory was 144.3 MB in the beginning and 144.3 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 693.56 ms. Allocated memory is still 169.9 MB. Free memory was 143.7 MB in the beginning and 122.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 135.42 ms. Allocated memory is still 169.9 MB. Free memory was 122.3 MB in the beginning and 118.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1273.43 ms. Allocated memory was 169.9 MB in the beginning and 216.0 MB in the end (delta: 46.1 MB). Free memory was 118.4 MB in the beginning and 178.2 MB in the end (delta: -59.8 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26293.56 ms. Allocated memory was 216.0 MB in the beginning and 595.6 MB in the end (delta: 379.6 MB). Free memory was 177.7 MB in the beginning and 411.5 MB in the end (delta: -233.8 MB). Peak memory consumption was 145.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L631] int pumpRunning = 0; [L632] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L132] int retValue_acc ; [L133] int tmp ; [L137] FCALL select_helpers() [L138] FCALL select_features() [L139] CALL, EXPR valid_product() [L181] int retValue_acc ; [L184] retValue_acc = 1 [L185] return (retValue_acc); [L139] RET, EXPR valid_product() [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) [L143] FCALL setup() [L144] CALL runTest() [L123] CALL test() [L558] int splverifierCounter ; [L559] int tmp ; [L560] int tmp___0 ; [L561] int tmp___1 ; [L562] int tmp___2 ; [L565] splverifierCounter = 0 [L567] COND TRUE 1 [L569] COND TRUE splverifierCounter < 4 [L575] tmp = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp) [L579] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L579] RET waterRise() [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp___0)) [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND FALSE !(\read(tmp___2)) [L601] tmp___1 = __VERIFIER_nondet_int() [L603] COND TRUE \read(tmp___1) [L605] CALL stopSystem() [L830] COND FALSE !(\read(pumpRunning)) [L837] systemActive = 0 [L605] RET stopSystem() [L612] CALL timeShift() [L639] COND FALSE !(\read(pumpRunning)) [L646] COND FALSE !(\read(systemActive)) [L654] CALL __utac_acc__Specification3_spec__1() [L938] int tmp ; [L939] int tmp___0 ; [L940] int tmp___1 ; [L944] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L944] RET, EXPR isMethaneLevelCritical() [L944] tmp = isMethaneLevelCritical() [L946] COND FALSE !(\read(tmp)) [L950] CALL, EXPR getWaterLevel() [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); [L950] RET, EXPR getWaterLevel() [L950] tmp___0 = getWaterLevel() [L952] COND TRUE tmp___0 == 2 [L954] CALL, EXPR isPumpRunning() [L763] int retValue_acc ; [L766] retValue_acc = pumpRunning [L767] return (retValue_acc); [L954] RET, EXPR isPumpRunning() [L954] tmp___1 = isPumpRunning() [L956] COND FALSE !(\read(tmp___1)) [L960] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 648 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1333 SDtfs, 2080 SDslu, 1510 SDs, 0 SdLazy, 3914 SolverSat, 716 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1157occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...