/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_spec2_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:51:14,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:51:14,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:51:14,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:51:14,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:51:14,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:51:14,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:51:14,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:51:14,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:51:14,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:51:14,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:51:14,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:51:14,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:51:14,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:51:14,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:51:14,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:51:14,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:51:14,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:51:14,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:51:14,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:51:14,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:51:14,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:51:14,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:51:14,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:51:14,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:51:14,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:51:14,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:51:14,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:51:14,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:51:14,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:51:14,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:51:14,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:51:14,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:51:14,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:51:14,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:51:14,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:51:14,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:51:14,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:51:14,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:51:14,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:51:14,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:51:14,266 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 18:51:14,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:51:14,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:51:14,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:51:14,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:51:14,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:51:14,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:51:14,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:51:14,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:51:14,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:51:14,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:51:14,282 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:51:14,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:51:14,282 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:51:14,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:51:14,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:51:14,283 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:51:14,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:51:14,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:51:14,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:51:14,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:51:14,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:51:14,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:51:14,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:51:14,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:51:14,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:51:14,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:51:14,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:51:14,668 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:51:14,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2021-02-21 18:51:14,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5202826b0/9ce3a5c20a994df8aed111799f532683/FLAG54104a77c [2021-02-21 18:51:15,548 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:51:15,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2021-02-21 18:51:15,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5202826b0/9ce3a5c20a994df8aed111799f532683/FLAG54104a77c [2021-02-21 18:51:15,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5202826b0/9ce3a5c20a994df8aed111799f532683 [2021-02-21 18:51:15,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:51:15,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:51:15,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:51:15,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:51:15,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:51:15,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:15,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598b8a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15, skipping insertion in model container [2021-02-21 18:51:15,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:15,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:51:15,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:51:16,043 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_spec2_product44.cil.c[1281,1294] [2021-02-21 18:51:16,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:51:16,269 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:51:16,299 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_spec2_product44.cil.c[1281,1294] [2021-02-21 18:51:16,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:51:16,417 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:51:16,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16 WrapperNode [2021-02-21 18:51:16,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:51:16,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:51:16,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:51:16,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:51:16,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (1/1) ... [2021-02-21 18:51:16,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (1/1) ... [2021-02-21 18:51:16,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (1/1) ... [2021-02-21 18:51:16,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (1/1) ... [2021-02-21 18:51:16,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (1/1) ... [2021-02-21 18:51:16,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (1/1) ... [2021-02-21 18:51:16,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (1/1) ... [2021-02-21 18:51:16,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:51:16,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:51:16,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:51:16,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:51:16,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (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 18:51:16,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:51:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:51:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:51:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:51:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:51:16,702 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:51:16,702 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:51:16,702 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:51:16,702 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:51:16,702 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:51:16,703 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:51:16,703 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:51:16,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:51:16,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:51:16,703 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:51:16,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:51:16,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:51:16,704 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:51:16,704 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:51:16,704 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:51:16,705 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:51:16,705 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:51:16,705 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:51:16,705 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:51:16,706 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:51:16,706 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:51:16,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:51:16,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:51:16,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:51:16,706 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:51:16,707 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:51:16,707 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:51:16,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:51:16,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:51:16,707 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:51:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:51:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:51:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:51:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:51:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:51:16,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:51:16,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:51:16,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:51:16,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:51:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:51:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:51:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:51:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:51:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:51:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:51:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:51:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:51:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:51:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:51:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:51:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:51:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:51:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:51:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:51:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:51:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:51:16,713 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:51:16,713 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:51:16,713 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:51:16,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:51:16,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:51:16,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:51:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:51:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:51:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:51:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:51:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:51:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:51:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:51:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:51:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:51:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:51:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:51:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:51:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:51:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:51:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:51:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:51:16,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:51:16,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:51:16,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:51:16,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:51:16,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:51:16,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:51:16,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:51:16,718 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:51:16,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:51:16,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:51:16,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:51:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:51:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:51:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:51:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:51:18,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:51:18,246 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:51:18,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:51:18 BoogieIcfgContainer [2021-02-21 18:51:18,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:51:18,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:51:18,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:51:18,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:51:18,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:51:15" (1/3) ... [2021-02-21 18:51:18,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e2cda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:51:18, skipping insertion in model container [2021-02-21 18:51:18,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:16" (2/3) ... [2021-02-21 18:51:18,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e2cda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:51:18, skipping insertion in model container [2021-02-21 18:51:18,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:51:18" (3/3) ... [2021-02-21 18:51:18,258 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2021-02-21 18:51:18,265 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:51:18,270 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:51:18,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:51:18,312 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:51:18,312 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:51:18,312 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:51:18,312 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:51:18,313 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:51:18,313 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:51:18,313 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:51:18,313 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:51:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states. [2021-02-21 18:51:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-21 18:51:18,358 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:18,359 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] [2021-02-21 18:51:18,359 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:18,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2087784931, now seen corresponding path program 1 times [2021-02-21 18:51:18,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:18,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114815315] [2021-02-21 18:51:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:18,463 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,555 WARN L202 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:19,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:19,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:19,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:19,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:19,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:19,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:19,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:19,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:19,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:19,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:19,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:19,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:19,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:19,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:51:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:19,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:19,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:19,797 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 18:51:19,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114815315] [2021-02-21 18:51:19,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:19,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:51:19,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807479067] [2021-02-21 18:51:19,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:51:19,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:19,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:51:19,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:51:19,835 INFO L87 Difference]: Start difference. First operand 323 states. Second operand 4 states. [2021-02-21 18:51:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:22,287 INFO L93 Difference]: Finished difference Result 505 states and 595 transitions. [2021-02-21 18:51:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 18:51:22,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-21 18:51:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:22,306 INFO L225 Difference]: With dead ends: 505 [2021-02-21 18:51:22,307 INFO L226 Difference]: Without dead ends: 323 [2021-02-21 18:51:22,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:51:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-02-21 18:51:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 271. [2021-02-21 18:51:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2021-02-21 18:51:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 293 transitions. [2021-02-21 18:51:22,474 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 293 transitions. Word has length 153 [2021-02-21 18:51:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:22,475 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 293 transitions. [2021-02-21 18:51:22,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:51:22,475 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 293 transitions. [2021-02-21 18:51:22,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-21 18:51:22,480 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:22,480 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] [2021-02-21 18:51:22,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:51:22,481 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:22,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:22,481 INFO L82 PathProgramCache]: Analyzing trace with hash 762887491, now seen corresponding path program 1 times [2021-02-21 18:51:22,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:22,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048082861] [2021-02-21 18:51:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:22,487 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:22,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:22,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:22,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:22,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:22,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:22,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,185 WARN L202 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:23,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 18:51:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:51:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,308 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 18:51:23,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048082861] [2021-02-21 18:51:23,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:23,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 18:51:23,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040648797] [2021-02-21 18:51:23,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 18:51:23,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:23,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 18:51:23,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:51:23,311 INFO L87 Difference]: Start difference. First operand 271 states and 293 transitions. Second operand 5 states. [2021-02-21 18:51:24,533 WARN L202 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:26,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:26,419 INFO L93 Difference]: Finished difference Result 420 states and 475 transitions. [2021-02-21 18:51:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 18:51:26,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-21 18:51:26,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:26,424 INFO L225 Difference]: With dead ends: 420 [2021-02-21 18:51:26,425 INFO L226 Difference]: Without dead ends: 312 [2021-02-21 18:51:26,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:51:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-21 18:51:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 261. [2021-02-21 18:51:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-02-21 18:51:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 280 transitions. [2021-02-21 18:51:26,586 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 280 transitions. Word has length 154 [2021-02-21 18:51:26,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:26,587 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 280 transitions. [2021-02-21 18:51:26,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 18:51:26,587 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 280 transitions. [2021-02-21 18:51:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-02-21 18:51:26,590 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:26,590 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] [2021-02-21 18:51:26,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:51:26,591 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash -164768204, now seen corresponding path program 1 times [2021-02-21 18:51:26,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:26,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417150941] [2021-02-21 18:51:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:26,597 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:26,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:26,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:26,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:26,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:26,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:26,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:26,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:26,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:26,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:26,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:26,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:26,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,494 WARN L202 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:27,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:51:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:51:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:51:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:27,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:27,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:27,734 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 18:51:27,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417150941] [2021-02-21 18:51:27,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:27,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:51:27,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392234852] [2021-02-21 18:51:27,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:51:27,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:27,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:51:27,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:51:27,737 INFO L87 Difference]: Start difference. First operand 261 states and 280 transitions. Second operand 11 states. [2021-02-21 18:51:28,835 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:29,648 WARN L202 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:30,316 WARN L202 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:51:31,071 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:31,810 WARN L202 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:32,488 WARN L202 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:34,357 WARN L202 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:38,865 INFO L93 Difference]: Finished difference Result 714 states and 834 transitions. [2021-02-21 18:51:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 18:51:38,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2021-02-21 18:51:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:38,872 INFO L225 Difference]: With dead ends: 714 [2021-02-21 18:51:38,872 INFO L226 Difference]: Without dead ends: 573 [2021-02-21 18:51:38,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2021-02-21 18:51:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-02-21 18:51:39,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 454. [2021-02-21 18:51:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2021-02-21 18:51:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 503 transitions. [2021-02-21 18:51:39,117 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 503 transitions. Word has length 167 [2021-02-21 18:51:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:39,118 INFO L480 AbstractCegarLoop]: Abstraction has 454 states and 503 transitions. [2021-02-21 18:51:39,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:51:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 503 transitions. [2021-02-21 18:51:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:51:39,121 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:39,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:39,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:51:39,122 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:39,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 772152383, now seen corresponding path program 1 times [2021-02-21 18:51:39,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:39,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728158119] [2021-02-21 18:51:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:39,126 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:39,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:39,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:39,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:39,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:39,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:39,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:39,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:39,909 WARN L202 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:39,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:39,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:39,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:39,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:39,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:39,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:39,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:40,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:40,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:40,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 18:51:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:40,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:40,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:51:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:40,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:40,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:40,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:40,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:40,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:40,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:51:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:40,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:40,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:40,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728158119] [2021-02-21 18:51:40,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:40,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:51:40,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568443083] [2021-02-21 18:51:40,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:51:40,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:51:40,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:51:40,127 INFO L87 Difference]: Start difference. First operand 454 states and 503 transitions. Second operand 10 states. [2021-02-21 18:51:41,228 WARN L202 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:43,941 WARN L202 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:44,702 WARN L202 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:45,557 WARN L202 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:46,306 WARN L202 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:47,037 WARN L202 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:47,751 WARN L202 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:48,456 WARN L202 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:49,457 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:52,265 INFO L93 Difference]: Finished difference Result 1250 states and 1504 transitions. [2021-02-21 18:51:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 18:51:52,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:51:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:52,274 INFO L225 Difference]: With dead ends: 1250 [2021-02-21 18:51:52,275 INFO L226 Difference]: Without dead ends: 916 [2021-02-21 18:51:52,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-21 18:51:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-02-21 18:51:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 740. [2021-02-21 18:51:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2021-02-21 18:51:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 830 transitions. [2021-02-21 18:51:52,610 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 830 transitions. Word has length 172 [2021-02-21 18:51:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:52,610 INFO L480 AbstractCegarLoop]: Abstraction has 740 states and 830 transitions. [2021-02-21 18:51:52,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:51:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 830 transitions. [2021-02-21 18:51:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:51:52,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:52,614 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 18:51:52,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:51:52,615 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:52,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1472019994, now seen corresponding path program 1 times [2021-02-21 18:51:52,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:52,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572114946] [2021-02-21 18:51:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:52,619 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:52,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:52,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:52,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:52,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:52,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:52,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:52,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:52,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:52,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:52,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,375 WARN L202 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 18:51:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:51:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:51:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:53,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:53,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:53,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:53,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:53,689 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 18:51:53,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572114946] [2021-02-21 18:51:53,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:53,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:51:53,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867302616] [2021-02-21 18:51:53,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:51:53,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:53,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:51:53,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:51:53,695 INFO L87 Difference]: Start difference. First operand 740 states and 830 transitions. Second operand 11 states. [2021-02-21 18:51:54,764 WARN L202 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:57,238 WARN L202 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:57,948 WARN L202 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:58,712 WARN L202 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:59,533 WARN L202 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:52:00,260 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:52:01,784 WARN L202 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:02,449 WARN L202 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:52:03,257 WARN L202 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:04,976 INFO L93 Difference]: Finished difference Result 1922 states and 2352 transitions. [2021-02-21 18:52:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 18:52:04,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2021-02-21 18:52:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:04,989 INFO L225 Difference]: With dead ends: 1922 [2021-02-21 18:52:04,989 INFO L226 Difference]: Without dead ends: 1302 [2021-02-21 18:52:04,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 18:52:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-02-21 18:52:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1014. [2021-02-21 18:52:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2021-02-21 18:52:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1144 transitions. [2021-02-21 18:52:05,471 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1144 transitions. Word has length 177 [2021-02-21 18:52:05,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:05,472 INFO L480 AbstractCegarLoop]: Abstraction has 1014 states and 1144 transitions. [2021-02-21 18:52:05,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:52:05,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1144 transitions. [2021-02-21 18:52:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-02-21 18:52:05,477 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:05,478 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:05,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:52:05,478 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:05,479 INFO L82 PathProgramCache]: Analyzing trace with hash -345141381, now seen corresponding path program 1 times [2021-02-21 18:52:05,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:05,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601372815] [2021-02-21 18:52:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:05,483 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:05,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:05,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,274 WARN L202 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:52:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:52:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:52:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:52:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:52:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:06,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:06,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:52:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:06,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:06,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:52:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:52:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:52:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 18:52:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-02-21 18:52:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,618 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 18:52:06,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601372815] [2021-02-21 18:52:06,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:52:06,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 18:52:06,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852840998] [2021-02-21 18:52:06,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 18:52:06,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:52:06,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 18:52:06,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-02-21 18:52:06,621 INFO L87 Difference]: Start difference. First operand 1014 states and 1144 transitions. Second operand 12 states. [2021-02-21 18:52:09,445 WARN L202 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:52:10,206 WARN L202 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:52:10,999 WARN L202 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-21 18:52:11,805 WARN L202 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:12,633 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:13,344 WARN L202 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:17,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:17,344 INFO L93 Difference]: Finished difference Result 2563 states and 3248 transitions. [2021-02-21 18:52:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-21 18:52:17,345 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 227 [2021-02-21 18:52:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:17,356 INFO L225 Difference]: With dead ends: 2563 [2021-02-21 18:52:17,356 INFO L226 Difference]: Without dead ends: 1669 [2021-02-21 18:52:17,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2021-02-21 18:52:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2021-02-21 18:52:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1052. [2021-02-21 18:52:17,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2021-02-21 18:52:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1182 transitions. [2021-02-21 18:52:17,820 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1182 transitions. Word has length 227 [2021-02-21 18:52:17,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:17,821 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1182 transitions. [2021-02-21 18:52:17,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 18:52:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1182 transitions. [2021-02-21 18:52:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-02-21 18:52:17,826 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:17,826 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:17,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:52:17,827 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:17,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:17,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1094658011, now seen corresponding path program 1 times [2021-02-21 18:52:17,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:17,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39493986] [2021-02-21 18:52:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:17,831 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:17,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:17,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:17,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:17,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:17,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:17,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:17,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:17,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:17,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:17,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,469 WARN L202 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:18,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:52:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:52:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:52:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:52:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:52:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:52:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:18,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:18,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:52:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:18,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:52:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:52:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 18:52:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-02-21 18:52:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:18,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:18,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:18,854 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 18:52:18,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39493986] [2021-02-21 18:52:18,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:52:18,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 18:52:18,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152662566] [2021-02-21 18:52:18,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 18:52:18,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:52:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 18:52:18,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:52:18,856 INFO L87 Difference]: Start difference. First operand 1052 states and 1182 transitions. Second operand 15 states. [2021-02-21 18:52:20,177 WARN L202 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:52:20,922 WARN L202 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:52:21,654 WARN L202 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:22,377 WARN L202 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:23,081 WARN L202 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:25,101 WARN L202 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:25,844 WARN L202 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:26,639 WARN L202 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:27,456 WARN L202 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:28,171 WARN L202 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:32,991 INFO L93 Difference]: Finished difference Result 2637 states and 3318 transitions. [2021-02-21 18:52:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 18:52:32,992 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 227 [2021-02-21 18:52:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:33,005 INFO L225 Difference]: With dead ends: 2637 [2021-02-21 18:52:33,005 INFO L226 Difference]: Without dead ends: 1705 [2021-02-21 18:52:33,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2021-02-21 18:52:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-02-21 18:52:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1076. [2021-02-21 18:52:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2021-02-21 18:52:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1206 transitions. [2021-02-21 18:52:33,439 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1206 transitions. Word has length 227 [2021-02-21 18:52:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:33,440 INFO L480 AbstractCegarLoop]: Abstraction has 1076 states and 1206 transitions. [2021-02-21 18:52:33,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 18:52:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1206 transitions. [2021-02-21 18:52:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-02-21 18:52:33,445 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:33,445 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:33,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:52:33,446 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:33,446 INFO L82 PathProgramCache]: Analyzing trace with hash 474186264, now seen corresponding path program 1 times [2021-02-21 18:52:33,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:33,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884952496] [2021-02-21 18:52:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:33,450 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:33,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:33,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:33,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:33,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:33,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:52:33,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,191 WARN L202 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:52:34,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:52:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:52:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:52:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:52:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:52:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:52:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:52:34,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:52:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:52:34,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:52:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:52:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 18:52:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-02-21 18:52:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:34,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:34,472 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 18:52:34,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884952496] [2021-02-21 18:52:34,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:52:34,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:52:34,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697600612] [2021-02-21 18:52:34,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:52:34,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:52:34,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:52:34,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:52:34,474 INFO L87 Difference]: Start difference. First operand 1076 states and 1206 transitions. Second operand 9 states. [2021-02-21 18:52:35,441 WARN L202 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:36,809 WARN L202 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:44,279 INFO L93 Difference]: Finished difference Result 4172 states and 5306 transitions. [2021-02-21 18:52:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-21 18:52:44,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2021-02-21 18:52:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:44,300 INFO L225 Difference]: With dead ends: 4172 [2021-02-21 18:52:44,300 INFO L226 Difference]: Without dead ends: 3216 [2021-02-21 18:52:44,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2021-02-21 18:52:44,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2021-02-21 18:52:45,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 2228. [2021-02-21 18:52:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2021-02-21 18:52:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2532 transitions. [2021-02-21 18:52:45,542 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2532 transitions. Word has length 227 [2021-02-21 18:52:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:45,543 INFO L480 AbstractCegarLoop]: Abstraction has 2228 states and 2532 transitions. [2021-02-21 18:52:45,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:52:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2532 transitions. [2021-02-21 18:52:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-02-21 18:52:45,549 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:45,549 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:45,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:52:45,550 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:45,550 INFO L82 PathProgramCache]: Analyzing trace with hash -810589803, now seen corresponding path program 1 times [2021-02-21 18:52:45,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:45,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419467974] [2021-02-21 18:52:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:45,553 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:45,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:45,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:45,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:45,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:45,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:45,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:45,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:45,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:45,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:45,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:52:45,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:45,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,334 WARN L202 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:46,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:46,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:52:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:52:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:52:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:52:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:46,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:52:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-02-21 18:52:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:46,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:52:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:52:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:52:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,704 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-21 18:52:46,707 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-21 18:52:46,768 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-21 18:52:46,769 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-21 18:52:46,815 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 18:52:46,816 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 18:52:46,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:46,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:46,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:46,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:46,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:46,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:47,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:47,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:52:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:47,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:47,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:47,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-02-21 18:52:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:47,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:47,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-02-21 18:52:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:47,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:47,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:47,155 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 18:52:47,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419467974] [2021-02-21 18:52:47,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:52:47,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-21 18:52:47,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258250645] [2021-02-21 18:52:47,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-21 18:52:47,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:52:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-21 18:52:47,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-02-21 18:52:47,158 INFO L87 Difference]: Start difference. First operand 2228 states and 2532 transitions. Second operand 22 states. [2021-02-21 18:52:48,443 WARN L202 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:49,555 WARN L202 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:52:50,346 WARN L202 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-02-21 18:52:51,114 WARN L202 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:51,867 WARN L202 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:52:52,585 WARN L202 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:54,618 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:56,673 WARN L202 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:57,602 WARN L202 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:52:58,666 WARN L202 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:59,517 WARN L202 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:53:03,364 WARN L202 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:04,412 WARN L202 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:53:05,228 WARN L202 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:06,067 WARN L202 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:53:06,862 WARN L202 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:07,856 WARN L202 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:53:08,626 WARN L202 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:09,484 WARN L202 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:53:11,072 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2021-02-21 18:53:12,844 WARN L202 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 221 DAG size of output: 211 [2021-02-21 18:53:14,535 WARN L202 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2021-02-21 18:53:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:23,279 INFO L93 Difference]: Finished difference Result 5246 states and 6382 transitions. [2021-02-21 18:53:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-02-21 18:53:23,280 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 232 [2021-02-21 18:53:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:23,302 INFO L225 Difference]: With dead ends: 5246 [2021-02-21 18:53:23,302 INFO L226 Difference]: Without dead ends: 3138 [2021-02-21 18:53:23,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=1223, Invalid=5419, Unknown=0, NotChecked=0, Total=6642 [2021-02-21 18:53:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2021-02-21 18:53:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2184. [2021-02-21 18:53:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2021-02-21 18:53:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 2472 transitions. [2021-02-21 18:53:24,267 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 2472 transitions. Word has length 232 [2021-02-21 18:53:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:24,268 INFO L480 AbstractCegarLoop]: Abstraction has 2184 states and 2472 transitions. [2021-02-21 18:53:24,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-21 18:53:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 2472 transitions. [2021-02-21 18:53:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-02-21 18:53:24,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:24,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:24,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:53:24,315 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:24,316 INFO L82 PathProgramCache]: Analyzing trace with hash -860034400, now seen corresponding path program 1 times [2021-02-21 18:53:24,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:24,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889767769] [2021-02-21 18:53:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:24,880 WARN L202 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2021-02-21 18:53:24,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-02-21 18:53:24,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:25,447 WARN L202 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2021-02-21 18:53:25,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-02-21 18:53:25,950 WARN L202 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2021-02-21 18:53:25,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-02-21 18:53:25,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:25,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:26,463 WARN L202 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2021-02-21 18:53:26,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:26,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-02-21 18:53:26,476 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 18:53:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:53:26,630 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:53:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:53:26,776 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:53:27,003 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:53:27,003 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:53:27,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:53:27,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:53:27 BoogieIcfgContainer [2021-02-21 18:53:27,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:53:27,036 INFO L168 Benchmark]: Toolchain (without parser) took 131210.45 ms. Allocated memory was 159.4 MB in the beginning and 886.0 MB in the end (delta: 726.7 MB). Free memory was 134.0 MB in the beginning and 516.9 MB in the end (delta: -382.9 MB). Peak memory consumption was 344.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:53:27,037 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:53:27,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.15 ms. Allocated memory is still 159.4 MB. Free memory was 132.9 MB in the beginning and 111.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:53:27,037 INFO L168 Benchmark]: Boogie Preprocessor took 98.30 ms. Allocated memory is still 159.4 MB. Free memory was 111.6 MB in the beginning and 107.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:53:27,037 INFO L168 Benchmark]: RCFGBuilder took 1731.59 ms. Allocated memory was 159.4 MB in the beginning and 212.9 MB in the end (delta: 53.5 MB). Free memory was 107.7 MB in the beginning and 139.2 MB in the end (delta: -31.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:53:27,038 INFO L168 Benchmark]: TraceAbstraction took 128784.39 ms. Allocated memory was 212.9 MB in the beginning and 886.0 MB in the end (delta: 673.2 MB). Free memory was 138.7 MB in the beginning and 516.9 MB in the end (delta: -378.3 MB). Peak memory consumption was 294.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:53:27,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 578.15 ms. Allocated memory is still 159.4 MB. Free memory was 132.9 MB in the beginning and 111.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.30 ms. Allocated memory is still 159.4 MB. Free memory was 111.6 MB in the beginning and 107.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1731.59 ms. Allocated memory was 159.4 MB in the beginning and 212.9 MB in the end (delta: 53.5 MB). Free memory was 107.7 MB in the beginning and 139.2 MB in the end (delta: -31.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 128784.39 ms. Allocated memory was 212.9 MB in the beginning and 886.0 MB in the end (delta: 673.2 MB). Free memory was 138.7 MB in the beginning and 516.9 MB in the end (delta: -378.3 MB). Peak memory consumption was 294.4 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: [L134] int pumpRunning = 0; [L135] int systemActive = 1; [L366] int cleanupTimeShifts = 4; [L464] int methAndRunningLastTime ; [L504] int waterLevel = 1; [L505] int methaneLevelCritical = 0; [L767] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L441] int retValue_acc ; [L442] int tmp ; [L446] FCALL select_helpers() [L447] FCALL select_features() [L448] CALL, EXPR valid_product() [L357] int retValue_acc ; [L360] retValue_acc = 1 [L361] return (retValue_acc); [L448] RET, EXPR valid_product() [L448] tmp = valid_product() [L450] COND TRUE \read(tmp) [L452] FCALL setup() [L453] CALL runTest() [L434] CALL __utac_acc__Specification2_spec__1() [L469] methAndRunningLastTime = 0 [L434] RET __utac_acc__Specification2_spec__1() [L435] CALL test() [L58] int splverifierCounter ; [L59] int tmp ; [L60] int tmp___0 ; [L61] int tmp___1 ; [L62] int tmp___2 ; [L65] splverifierCounter = 0 [L67] COND TRUE 1 [L69] COND TRUE splverifierCounter < 4 [L75] tmp = __VERIFIER_nondet_int() [L77] COND TRUE \read(tmp) [L79] CALL waterRise() [L522] COND TRUE waterLevel < 2 [L523] waterLevel = waterLevel + 1 [L79] RET waterRise() [L85] tmp___0 = __VERIFIER_nondet_int() [L87] COND FALSE !(\read(tmp___0)) [L95] tmp___2 = __VERIFIER_nondet_int() [L97] COND TRUE \read(tmp___2) [L99] CALL startSystem() [L323] systemActive = 1 [L99] RET startSystem() [L114] CALL timeShift() [L142] COND FALSE !(\read(pumpRunning)) [L149] COND TRUE \read(systemActive) [L151] CALL processEnvironment() [L171] int tmp ; [L174] COND TRUE ! pumpRunning [L176] CALL, EXPR isHighWaterLevel() [L286] int retValue_acc ; [L287] int tmp ; [L288] int tmp___0 ; [L292] CALL, EXPR isHighWaterSensorDry() [L584] int retValue_acc ; [L587] COND FALSE !(waterLevel < 2) [L591] retValue_acc = 0 [L592] return (retValue_acc); [L292] RET, EXPR isHighWaterSensorDry() [L292] tmp = isHighWaterSensorDry() [L294] COND FALSE !(\read(tmp)) [L297] tmp___0 = 1 [L299] retValue_acc = tmp___0 [L300] return (retValue_acc); [L176] RET, EXPR isHighWaterLevel() [L176] tmp = isHighWaterLevel() [L178] COND TRUE \read(tmp) [L180] CALL activatePump() [L205] int tmp ; [L209] CALL, EXPR isMethaneAlarm() [L230] int retValue_acc ; [L234] CALL, EXPR isMethaneLevelCritical() [L543] int retValue_acc ; [L546] retValue_acc = methaneLevelCritical [L547] return (retValue_acc); [L234] RET, EXPR isMethaneLevelCritical() [L234] retValue_acc = isMethaneLevelCritical() [L236] return (retValue_acc); [L209] RET, EXPR isMethaneAlarm() [L209] tmp = isMethaneAlarm() [L211] COND FALSE !(\read(tmp)) [L215] CALL activatePump__wrappee__highWaterSensor() [L199] pumpRunning = 1 [L215] RET activatePump__wrappee__highWaterSensor() [L180] RET activatePump() [L151] RET processEnvironment() [L157] CALL __utac_acc__Specification2_spec__2() [L474] int tmp ; [L475] int tmp___0 ; [L479] CALL, EXPR isMethaneLevelCritical() [L543] int retValue_acc ; [L546] retValue_acc = methaneLevelCritical [L547] return (retValue_acc); [L479] RET, EXPR isMethaneLevelCritical() [L479] tmp = isMethaneLevelCritical() [L481] COND FALSE !(\read(tmp)) [L497] methAndRunningLastTime = 0 [L157] RET __utac_acc__Specification2_spec__2() [L114] RET timeShift() [L67] COND TRUE 1 [L69] COND TRUE splverifierCounter < 4 [L75] tmp = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp)) [L85] tmp___0 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___0) [L89] CALL changeMethaneLevel() [L534] COND FALSE !(\read(methaneLevelCritical)) [L537] methaneLevelCritical = 1 [L89] RET changeMethaneLevel() [L95] tmp___2 = __VERIFIER_nondet_int() [L97] COND TRUE \read(tmp___2) [L99] CALL startSystem() [L323] systemActive = 1 [L99] RET startSystem() [L114] CALL timeShift() [L142] COND TRUE \read(pumpRunning) [L144] CALL lowerWaterLevel() [L510] COND TRUE waterLevel > 0 [L511] waterLevel = waterLevel - 1 [L144] RET lowerWaterLevel() [L149] COND TRUE \read(systemActive) [L151] CALL processEnvironment() [L171] int tmp ; [L174] COND FALSE !(! pumpRunning) [L189] FCALL processEnvironment__wrappee__base() [L151] RET processEnvironment() [L157] CALL __utac_acc__Specification2_spec__2() [L474] int tmp ; [L475] int tmp___0 ; [L479] CALL, EXPR isMethaneLevelCritical() [L543] int retValue_acc ; [L546] retValue_acc = methaneLevelCritical [L547] return (retValue_acc); [L479] RET, EXPR isMethaneLevelCritical() [L479] tmp = isMethaneLevelCritical() [L481] COND TRUE \read(tmp) [L483] CALL, EXPR isPumpRunning() [L241] int retValue_acc ; [L244] retValue_acc = pumpRunning [L245] return (retValue_acc); [L483] RET, EXPR isPumpRunning() [L483] tmp___0 = isPumpRunning() [L485] COND TRUE \read(tmp___0) [L486] COND TRUE \read(methAndRunningLastTime) [L488] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 643 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 128.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 111.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2458 SDtfs, 8569 SDslu, 7060 SDs, 0 SdLazy, 15284 SolverSat, 3098 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 60.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2228occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 3874 StatesRemovedByMinimization, 9 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...