/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_spec4_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:33:58,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:33:58,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:33:58,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:33:58,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:33:58,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:33:58,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:33:58,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:33:58,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:33:58,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:33:58,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:33:58,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:33:58,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:33:58,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:33:58,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:33:58,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:33:58,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:33:58,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:33:58,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:33:58,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:33:58,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:33:58,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:33:58,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:33:58,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:33:58,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:33:58,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:33:58,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:33:58,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:33:58,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:33:58,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:33:58,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:33:58,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:33:58,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:33:58,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:33:58,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:33:58,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:33:58,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:33:58,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:33:58,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:33:58,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:33:58,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:33:58,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:33:58,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:33:58,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:33:58,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:33:58,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:33:58,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:33:58,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:33:58,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:33:58,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:33:58,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:33:58,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:33:58,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:33:58,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:33:58,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:33:58,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:33:58,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:33:58,705 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:33:58,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:33:58,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:33:58,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:33:58,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:33:58,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:33:58,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:33:58,707 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:33:59,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:33:59,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:33:59,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:33:59,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:33:59,175 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:33:59,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product14.cil.c [2021-02-23 16:33:59,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798a4d1e2/32634f92f188427d98ffe0fda6dbf80f/FLAG19317e4fc [2021-02-23 16:34:00,080 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:34:00,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product14.cil.c [2021-02-23 16:34:00,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798a4d1e2/32634f92f188427d98ffe0fda6dbf80f/FLAG19317e4fc [2021-02-23 16:34:00,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798a4d1e2/32634f92f188427d98ffe0fda6dbf80f [2021-02-23 16:34:00,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:34:00,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:34:00,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:34:00,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:34:00,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:34:00,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:34:00" (1/1) ... [2021-02-23 16:34:00,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13781d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:00, skipping insertion in model container [2021-02-23 16:34:00,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:34:00" (1/1) ... [2021-02-23 16:34:00,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:34:00,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:34:00,852 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_spec4_product14.cil.c[15656,15669] [2021-02-23 16:34:00,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:34:00,897 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:34:00,978 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_spec4_product14.cil.c[15656,15669] [2021-02-23 16:34:00,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:34:01,045 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:34:01,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01 WrapperNode [2021-02-23 16:34:01,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:34:01,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:34:01,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:34:01,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:34:01,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (1/1) ... [2021-02-23 16:34:01,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (1/1) ... [2021-02-23 16:34:01,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (1/1) ... [2021-02-23 16:34:01,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (1/1) ... [2021-02-23 16:34:01,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (1/1) ... [2021-02-23 16:34:01,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (1/1) ... [2021-02-23 16:34:01,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (1/1) ... [2021-02-23 16:34:01,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:34:01,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:34:01,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:34:01,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:34:01,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:34:01,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:34:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:34:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:34:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:34:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:34:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:34:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:34:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:34:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:34:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:34:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:34:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:34:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:34:01,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:34:01,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:34:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:34:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:34:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:34:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:34:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:34:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:34:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:34:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:34:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:34:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:34:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:34:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:34:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:34:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:34:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:34:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:34:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:34:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:34:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:34:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:34:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:34:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:34:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:34:01,270 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:34:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:34:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:34:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:34:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:34:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:34:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:34:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:34:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:34:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:34:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:34:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:34:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:34:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:34:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:34:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:34:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:34:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:34:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:34:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:34:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:34:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:34:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:34:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:34:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:34:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:34:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:34:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:34:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:34:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:34:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:34:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:34:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:34:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:34:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:34:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:34:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:34:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:34:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:34:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:34:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:34:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:34:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:34:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:34:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:34:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:34:02,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:34:02,591 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:34:02,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:34:02 BoogieIcfgContainer [2021-02-23 16:34:02,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:34:02,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:34:02,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:34:02,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:34:02,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:34:00" (1/3) ... [2021-02-23 16:34:02,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7405c585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:34:02, skipping insertion in model container [2021-02-23 16:34:02,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:34:01" (2/3) ... [2021-02-23 16:34:02,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7405c585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:34:02, skipping insertion in model container [2021-02-23 16:34:02,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:34:02" (3/3) ... [2021-02-23 16:34:02,604 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product14.cil.c [2021-02-23 16:34:02,612 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:34:02,619 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:34:02,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:34:02,676 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:34:02,676 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:34:02,676 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:34:02,677 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:34:02,677 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:34:02,677 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:34:02,677 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:34:02,677 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:34:02,703 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states. [2021-02-23 16:34:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:34:02,725 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:02,726 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] [2021-02-23 16:34:02,727 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:02,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2130098116, now seen corresponding path program 1 times [2021-02-23 16:34:02,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:02,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344056725] [2021-02-23 16:34:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:02,836 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:34:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:03,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,683 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:34:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:34:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:03,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:03,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:03,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:03,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:03,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:34:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:03,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:34:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:03,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:03,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:03,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344056725] [2021-02-23 16:34:03,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:03,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:34:03,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68116988] [2021-02-23 16:34:03,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:34:03,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:04,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:34:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:34:04,017 INFO L87 Difference]: Start difference. First operand 289 states. Second operand 3 states. [2021-02-23 16:34:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:05,652 INFO L93 Difference]: Finished difference Result 416 states and 495 transitions. [2021-02-23 16:34:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:34:05,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:34:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:05,672 INFO L225 Difference]: With dead ends: 416 [2021-02-23 16:34:05,673 INFO L226 Difference]: Without dead ends: 267 [2021-02-23 16:34:05,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:34:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-02-23 16:34:05,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 227. [2021-02-23 16:34:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2021-02-23 16:34:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2021-02-23 16:34:05,855 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 147 [2021-02-23 16:34:05,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:05,858 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 243 transitions. [2021-02-23 16:34:05,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:34:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 243 transitions. [2021-02-23 16:34:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:34:05,874 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:05,874 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] [2021-02-23 16:34:05,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:34:05,875 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:05,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash 915986561, now seen corresponding path program 1 times [2021-02-23 16:34:05,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:05,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431261556] [2021-02-23 16:34:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:05,884 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:34:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:06,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:06,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,377 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:34:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:34:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:06,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:06,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:06,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:06,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:06,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:34:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:06,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:34:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:06,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:06,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:06,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431261556] [2021-02-23 16:34:06,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:06,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:34:06,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260183246] [2021-02-23 16:34:06,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:34:06,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:06,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:34:06,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:34:06,508 INFO L87 Difference]: Start difference. First operand 227 states and 243 transitions. Second operand 4 states. [2021-02-23 16:34:07,252 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:34:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:08,060 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2021-02-23 16:34:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:34:08,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:34:08,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:08,065 INFO L225 Difference]: With dead ends: 328 [2021-02-23 16:34:08,065 INFO L226 Difference]: Without dead ends: 250 [2021-02-23 16:34:08,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:34:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-02-23 16:34:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 217. [2021-02-23 16:34:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-23 16:34:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 230 transitions. [2021-02-23 16:34:08,200 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 230 transitions. Word has length 148 [2021-02-23 16:34:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:08,203 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 230 transitions. [2021-02-23 16:34:08,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:34:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 230 transitions. [2021-02-23 16:34:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:34:08,209 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:08,210 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] [2021-02-23 16:34:08,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:34:08,210 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:08,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1445453581, now seen corresponding path program 1 times [2021-02-23 16:34:08,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:08,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713487343] [2021-02-23 16:34:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:08,222 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:34:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:08,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:08,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:08,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,728 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:34:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:34:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:34:08,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:34:08,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:34:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:08,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:34:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:34:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:08,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713487343] [2021-02-23 16:34:08,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:08,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:34:08,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788362721] [2021-02-23 16:34:08,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:34:08,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:08,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:34:08,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:34:08,904 INFO L87 Difference]: Start difference. First operand 217 states and 230 transitions. Second operand 10 states. [2021-02-23 16:34:09,579 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:34:09,928 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:34:10,223 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:34:10,496 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:10,768 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:11,020 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:12,374 INFO L93 Difference]: Finished difference Result 374 states and 427 transitions. [2021-02-23 16:34:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:34:12,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:34:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:12,378 INFO L225 Difference]: With dead ends: 374 [2021-02-23 16:34:12,379 INFO L226 Difference]: Without dead ends: 272 [2021-02-23 16:34:12,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:34:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-02-23 16:34:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 217. [2021-02-23 16:34:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-23 16:34:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 229 transitions. [2021-02-23 16:34:12,495 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 229 transitions. Word has length 161 [2021-02-23 16:34:12,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:12,496 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 229 transitions. [2021-02-23 16:34:12,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:34:12,496 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 229 transitions. [2021-02-23 16:34:12,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-23 16:34:12,498 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:12,499 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] [2021-02-23 16:34:12,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:34:12,499 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash -910999285, now seen corresponding path program 1 times [2021-02-23 16:34:12,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:12,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665525960] [2021-02-23 16:34:12,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:12,505 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:34:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:12,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:12,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:12,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:12,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:12,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:12,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:12,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:12,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:12,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:12,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:12,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:12,881 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:34:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:34:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:12,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:12,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:34:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:12,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:12,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:12,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:12,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:12,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:12,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:34:12,984 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:34:12,988 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:34:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:13,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:13,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:34:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:13,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:13,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:34:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:13,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:13,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:34:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:13,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:13,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:34:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:13,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:13,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:13,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:13,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:13,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:13,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:13,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:34:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:13,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:13,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:13,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665525960] [2021-02-23 16:34:13,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:13,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 16:34:13,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910733557] [2021-02-23 16:34:13,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 16:34:13,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:13,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 16:34:13,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:34:13,190 INFO L87 Difference]: Start difference. First operand 217 states and 229 transitions. Second operand 15 states. [2021-02-23 16:34:13,878 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:34:14,314 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:34:14,644 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:34:14,976 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:15,293 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:15,670 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:16,369 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:34:17,524 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:17,859 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:18,274 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:18,628 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:34:18,934 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:34:19,249 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:34:19,564 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:34:19,869 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:20,186 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:20,548 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:20,998 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:34:21,337 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:21,707 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:23,634 INFO L93 Difference]: Finished difference Result 738 states and 934 transitions. [2021-02-23 16:34:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 16:34:23,634 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2021-02-23 16:34:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:23,654 INFO L225 Difference]: With dead ends: 738 [2021-02-23 16:34:23,655 INFO L226 Difference]: Without dead ends: 636 [2021-02-23 16:34:23,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 16:34:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-02-23 16:34:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 397. [2021-02-23 16:34:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2021-02-23 16:34:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 435 transitions. [2021-02-23 16:34:23,899 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 435 transitions. Word has length 169 [2021-02-23 16:34:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:23,900 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 435 transitions. [2021-02-23 16:34:23,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 16:34:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 435 transitions. [2021-02-23 16:34:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-23 16:34:23,904 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:23,904 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] [2021-02-23 16:34:23,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:34:23,905 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:23,906 INFO L82 PathProgramCache]: Analyzing trace with hash 473787990, now seen corresponding path program 1 times [2021-02-23 16:34:23,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:23,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85567004] [2021-02-23 16:34:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:23,910 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:34:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:23,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:23,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:23,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:23,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:23,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:23,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:23,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:23,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:23,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:23,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:23,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:23,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,211 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:34:24,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:34:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:24,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:34:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:34:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:34:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:34:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 16:34:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-23 16:34:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:24,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:24,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85567004] [2021-02-23 16:34:24,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:24,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:34:24,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846208193] [2021-02-23 16:34:24,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:34:24,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:24,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:34:24,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:34:24,401 INFO L87 Difference]: Start difference. First operand 397 states and 435 transitions. Second operand 7 states. [2021-02-23 16:34:25,043 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:34:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:26,014 INFO L93 Difference]: Finished difference Result 677 states and 788 transitions. [2021-02-23 16:34:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:34:26,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-23 16:34:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:26,019 INFO L225 Difference]: With dead ends: 677 [2021-02-23 16:34:26,019 INFO L226 Difference]: Without dead ends: 395 [2021-02-23 16:34:26,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:34:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-23 16:34:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 308. [2021-02-23 16:34:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-02-23 16:34:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 325 transitions. [2021-02-23 16:34:26,137 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 325 transitions. Word has length 174 [2021-02-23 16:34:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:26,138 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 325 transitions. [2021-02-23 16:34:26,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:34:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 325 transitions. [2021-02-23 16:34:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-02-23 16:34:26,142 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:26,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:34:26,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:34:26,143 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:26,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:26,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1053508853, now seen corresponding path program 1 times [2021-02-23 16:34:26,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:26,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508342565] [2021-02-23 16:34:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:26,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:26,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1