/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:10:34,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:10:34,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:10:34,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:10:34,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:10:34,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:10:34,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:10:34,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:10:34,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:10:34,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:10:34,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:10:34,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:10:34,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:10:34,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:10:34,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:10:34,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:10:34,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:10:34,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:10:34,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:10:34,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:10:34,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:10:34,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:10:34,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:10:34,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:10:34,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:10:34,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:10:34,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:10:34,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:10:34,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:10:34,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:10:34,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:10:34,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:10:34,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:10:34,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:10:34,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:10:34,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:10:34,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:10:34,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:10:34,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:10:34,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:10:34,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:10:34,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:10:34,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:10:34,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:10:34,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:10:34,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:10:34,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:10:34,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:10:34,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:10:34,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:10:34,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:10:34,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:10:34,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:10:34,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:10:34,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:10:34,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:10:34,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:10:34,775 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:10:34,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:10:34,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:10:34,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:10:34,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:10:34,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:10:34,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:10:34,777 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:10:34,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:10:35,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:10:35,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:10:35,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:10:35,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:10:35,192 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:10:35,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2021-02-24 03:10:35,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb7f8ef4/3ed042ff35f54382846549585f360446/FLAG51bd5362e [2021-02-24 03:10:36,064 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:10:36,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2021-02-24 03:10:36,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb7f8ef4/3ed042ff35f54382846549585f360446/FLAG51bd5362e [2021-02-24 03:10:36,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb7f8ef4/3ed042ff35f54382846549585f360446 [2021-02-24 03:10:36,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:10:36,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:10:36,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:10:36,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:10:36,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:10:36,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:36,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14618ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36, skipping insertion in model container [2021-02-24 03:10:36,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:36,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:10:36,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:10:36,618 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_spec1_product52.cil.c[5838,5851] [2021-02-24 03:10:36,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:10:36,749 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:10:36,789 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_spec1_product52.cil.c[5838,5851] [2021-02-24 03:10:36,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:10:36,941 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:10:36,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36 WrapperNode [2021-02-24 03:10:36,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:10:36,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:10:36,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:10:36,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:10:36,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:36,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:37,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:37,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:37,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:37,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:37,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (1/1) ... [2021-02-24 03:10:37,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:10:37,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:10:37,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:10:37,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:10:37,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (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 [2021-02-24 03:10:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:10:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:10:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:10:37,277 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:10:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:10:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:10:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:10:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:10:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:10:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:10:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:10:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:10:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:10:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:10:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:10:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:10:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:10:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:10:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:10:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:10:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:10:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:10:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:10:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:10:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:10:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:10:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:10:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:10:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:10:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:10:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:10:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:10:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:10:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:10:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:10:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:10:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:10:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:10:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:10:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:10:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:10:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:10:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:10:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:10:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:10:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:10:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:10:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:10:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:10:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:10:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:10:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:10:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:10:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:10:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:10:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:10:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:10:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:10:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:10:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:10:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:10:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:10:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:10:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:10:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:10:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:10:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:10:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:10:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:10:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:10:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:10:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:10:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:10:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:10:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:10:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:10:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:10:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:10:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:10:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:10:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:10:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:10:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:10:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:10:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:10:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:10:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:10:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:10:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:10:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:10:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:10:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:10:37,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:10:38,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:10:38,964 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:10:38,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:10:38 BoogieIcfgContainer [2021-02-24 03:10:38,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:10:38,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:10:38,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:10:38,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:10:38,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:10:36" (1/3) ... [2021-02-24 03:10:38,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:10:38, skipping insertion in model container [2021-02-24 03:10:38,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:36" (2/3) ... [2021-02-24 03:10:38,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:10:38, skipping insertion in model container [2021-02-24 03:10:38,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:10:38" (3/3) ... [2021-02-24 03:10:38,981 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2021-02-24 03:10:38,990 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:10:38,996 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:10:39,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:10:39,050 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:10:39,051 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:10:39,051 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:10:39,051 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:10:39,051 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:10:39,052 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:10:39,052 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:10:39,052 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:10:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states. [2021-02-24 03:10:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-24 03:10:39,102 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:39,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:10:39,103 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash -455894786, now seen corresponding path program 1 times [2021-02-24 03:10:39,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:39,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920002135] [2021-02-24 03:10:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:39,191 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:39,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:39,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:39,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:39,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:40,184 WARN L202 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:40,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:40,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:40,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:40,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:40,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:40,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:40,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:40,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:40,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:40,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:10:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:40,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:40,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:40,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:10:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:40,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:40,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:10:40,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920002135] [2021-02-24 03:10:40,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:40,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:10:40,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91009634] [2021-02-24 03:10:40,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:10:40,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:40,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:10:40,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:10:40,427 INFO L87 Difference]: Start difference. First operand 334 states. Second operand 3 states. [2021-02-24 03:10:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:42,897 INFO L93 Difference]: Finished difference Result 518 states and 615 transitions. [2021-02-24 03:10:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:10:42,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-24 03:10:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:42,917 INFO L225 Difference]: With dead ends: 518 [2021-02-24 03:10:42,917 INFO L226 Difference]: Without dead ends: 320 [2021-02-24 03:10:42,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:10:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-24 03:10:43,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 276. [2021-02-24 03:10:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2021-02-24 03:10:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 300 transitions. [2021-02-24 03:10:43,093 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 300 transitions. Word has length 147 [2021-02-24 03:10:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:43,094 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 300 transitions. [2021-02-24 03:10:43,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:10:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 300 transitions. [2021-02-24 03:10:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 03:10:43,099 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:43,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:10:43,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:10:43,100 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:43,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:43,101 INFO L82 PathProgramCache]: Analyzing trace with hash 800101440, now seen corresponding path program 1 times [2021-02-24 03:10:43,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:43,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630671238] [2021-02-24 03:10:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:43,106 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:43,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:43,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:43,886 WARN L202 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:43,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:43,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:43,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:10:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:43,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:10:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:43,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:43,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:10:44,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630671238] [2021-02-24 03:10:44,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:44,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:10:44,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988191675] [2021-02-24 03:10:44,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:10:44,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:44,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:10:44,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:10:44,017 INFO L87 Difference]: Start difference. First operand 276 states and 300 transitions. Second operand 4 states. [2021-02-24 03:10:45,201 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:46,981 INFO L93 Difference]: Finished difference Result 424 states and 477 transitions. [2021-02-24 03:10:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:10:46,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-24 03:10:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:46,987 INFO L225 Difference]: With dead ends: 424 [2021-02-24 03:10:46,987 INFO L226 Difference]: Without dead ends: 303 [2021-02-24 03:10:46,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:10:46,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-24 03:10:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 266. [2021-02-24 03:10:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-02-24 03:10:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 287 transitions. [2021-02-24 03:10:47,083 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 287 transitions. Word has length 148 [2021-02-24 03:10:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:47,084 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 287 transitions. [2021-02-24 03:10:47,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:10:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 287 transitions. [2021-02-24 03:10:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-24 03:10:47,087 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:47,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:10:47,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:10:47,088 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:47,088 INFO L82 PathProgramCache]: Analyzing trace with hash -523924446, now seen corresponding path program 1 times [2021-02-24 03:10:47,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:47,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384423245] [2021-02-24 03:10:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:47,092 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:47,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:47,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:47,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:47,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:47,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:47,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:47,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:47,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:47,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:47,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:10:47,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:47,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:47,937 WARN L202 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:47,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:47,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:47,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:47,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:47,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:48,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:48,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:48,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:48,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:48,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:48,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:48,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:10:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:48,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:48,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:48,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:10:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:48,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:48,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-24 03:10:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:48,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:48,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:10:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:48,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:48,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:10:48,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384423245] [2021-02-24 03:10:48,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:48,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:10:48,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75077424] [2021-02-24 03:10:48,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:10:48,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:48,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:10:48,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:10:48,179 INFO L87 Difference]: Start difference. First operand 266 states and 287 transitions. Second operand 10 states. [2021-02-24 03:10:49,164 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:10:49,972 WARN L202 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:10:50,694 WARN L202 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:10:51,420 WARN L202 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:52,111 WARN L202 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:10:52,831 WARN L202 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:10:54,416 WARN L202 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:10:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:10:58,688 INFO L93 Difference]: Finished difference Result 723 states and 841 transitions. [2021-02-24 03:10:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 03:10:58,689 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-24 03:10:58,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:10:58,694 INFO L225 Difference]: With dead ends: 723 [2021-02-24 03:10:58,695 INFO L226 Difference]: Without dead ends: 572 [2021-02-24 03:10:58,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:10:58,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-02-24 03:10:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 477. [2021-02-24 03:10:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2021-02-24 03:10:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 533 transitions. [2021-02-24 03:10:58,940 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 533 transitions. Word has length 161 [2021-02-24 03:10:58,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:10:58,941 INFO L480 AbstractCegarLoop]: Abstraction has 477 states and 533 transitions. [2021-02-24 03:10:58,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:10:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 533 transitions. [2021-02-24 03:10:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-24 03:10:58,945 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:10:58,946 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] [2021-02-24 03:10:58,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:10:58,946 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:10:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:10:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1808882381, now seen corresponding path program 1 times [2021-02-24 03:10:58,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:10:58,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924056017] [2021-02-24 03:10:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:10:58,951 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:10:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,691 WARN L202 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:10:59,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:10:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:10:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:10:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:10:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:10:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:10:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-24 03:10:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:10:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-24 03:10:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:10:59,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:10:59,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:10:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:10:59,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924056017] [2021-02-24 03:10:59,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:10:59,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:10:59,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139567920] [2021-02-24 03:10:59,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:10:59,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:10:59,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:10:59,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:10:59,889 INFO L87 Difference]: Start difference. First operand 477 states and 533 transitions. Second operand 9 states. [2021-02-24 03:11:00,900 WARN L202 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:03,323 WARN L202 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:04,031 WARN L202 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:04,899 WARN L202 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:05,637 WARN L202 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:06,329 WARN L202 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:06,988 WARN L202 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:07,690 WARN L202 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:08,802 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:11,095 INFO L93 Difference]: Finished difference Result 1319 states and 1577 transitions. [2021-02-24 03:11:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 03:11:11,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-24 03:11:11,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:11,106 INFO L225 Difference]: With dead ends: 1319 [2021-02-24 03:11:11,106 INFO L226 Difference]: Without dead ends: 957 [2021-02-24 03:11:11,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:11:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-02-24 03:11:11,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 800. [2021-02-24 03:11:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2021-02-24 03:11:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 907 transitions. [2021-02-24 03:11:11,484 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 907 transitions. Word has length 166 [2021-02-24 03:11:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:11,484 INFO L480 AbstractCegarLoop]: Abstraction has 800 states and 907 transitions. [2021-02-24 03:11:11,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:11:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 907 transitions. [2021-02-24 03:11:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-24 03:11:11,494 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:11,495 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] [2021-02-24 03:11:11,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:11:11,495 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1246435019, now seen corresponding path program 1 times [2021-02-24 03:11:11,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:11,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335146938] [2021-02-24 03:11:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:11,501 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:11,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:11,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:11,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:11,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:11,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:11,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:11,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:11,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:11,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:11,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,212 WARN L202 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:12,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-24 03:11:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:11:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-24 03:11:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:12,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:12,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335146938] [2021-02-24 03:11:12,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:12,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:11:12,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698916006] [2021-02-24 03:11:12,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:11:12,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:12,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:11:12,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:11:12,422 INFO L87 Difference]: Start difference. First operand 800 states and 907 transitions. Second operand 10 states. [2021-02-24 03:11:13,478 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:15,761 WARN L202 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:16,473 WARN L202 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:17,140 WARN L202 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:17,759 WARN L202 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:18,372 WARN L202 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:19,690 WARN L202 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:20,355 WARN L202 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:21,140 WARN L202 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:22,940 INFO L93 Difference]: Finished difference Result 2063 states and 2538 transitions. [2021-02-24 03:11:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 03:11:22,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-24 03:11:22,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:22,951 INFO L225 Difference]: With dead ends: 2063 [2021-02-24 03:11:22,951 INFO L226 Difference]: Without dead ends: 1378 [2021-02-24 03:11:22,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-24 03:11:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-02-24 03:11:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1110. [2021-02-24 03:11:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2021-02-24 03:11:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1278 transitions. [2021-02-24 03:11:23,398 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1278 transitions. Word has length 171 [2021-02-24 03:11:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:23,398 INFO L480 AbstractCegarLoop]: Abstraction has 1110 states and 1278 transitions. [2021-02-24 03:11:23,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:11:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1278 transitions. [2021-02-24 03:11:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-24 03:11:23,403 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:23,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:23,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:11:23,404 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:23,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:23,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1404694206, now seen corresponding path program 1 times [2021-02-24 03:11:23,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:23,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43513724] [2021-02-24 03:11:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:23,408 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:23,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:23,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:23,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,011 WARN L202 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:24,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:11:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:11:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:24,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:24,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:24,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:24,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-24 03:11:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-24 03:11:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:24,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:24,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:24,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43513724] [2021-02-24 03:11:24,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:24,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 03:11:24,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840997810] [2021-02-24 03:11:24,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 03:11:24,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:24,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 03:11:24,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:11:24,306 INFO L87 Difference]: Start difference. First operand 1110 states and 1278 transitions. Second operand 11 states. [2021-02-24 03:11:26,842 WARN L202 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:27,575 WARN L202 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:11:28,292 WARN L202 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-24 03:11:29,043 WARN L202 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:29,816 WARN L202 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:30,495 WARN L202 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:33,836 INFO L93 Difference]: Finished difference Result 2722 states and 3408 transitions. [2021-02-24 03:11:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:11:33,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2021-02-24 03:11:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:33,848 INFO L225 Difference]: With dead ends: 2722 [2021-02-24 03:11:33,848 INFO L226 Difference]: Without dead ends: 1727 [2021-02-24 03:11:33,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-24 03:11:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-02-24 03:11:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1148. [2021-02-24 03:11:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1148 states. [2021-02-24 03:11:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1318 transitions. [2021-02-24 03:11:34,289 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1318 transitions. Word has length 204 [2021-02-24 03:11:34,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:34,289 INFO L480 AbstractCegarLoop]: Abstraction has 1148 states and 1318 transitions. [2021-02-24 03:11:34,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 03:11:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1318 transitions. [2021-02-24 03:11:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-24 03:11:34,294 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:34,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:34,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:11:34,295 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:34,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1916402914, now seen corresponding path program 1 times [2021-02-24 03:11:34,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:34,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666669315] [2021-02-24 03:11:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:34,298 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:34,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:34,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:34,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:34,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:34,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:34,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:34,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:34,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:34,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:34,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:34,951 WARN L202 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:35,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:35,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:11:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:11:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:35,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:35,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:35,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-24 03:11:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-24 03:11:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:35,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:35,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:35,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666669315] [2021-02-24 03:11:35,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:35,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 03:11:35,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502422207] [2021-02-24 03:11:35,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 03:11:35,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:35,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 03:11:35,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:11:35,305 INFO L87 Difference]: Start difference. First operand 1148 states and 1318 transitions. Second operand 14 states. [2021-02-24 03:11:36,473 WARN L202 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:37,163 WARN L202 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:11:37,842 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:38,503 WARN L202 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:39,180 WARN L202 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:41,106 WARN L202 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:41,815 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:42,532 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:43,250 WARN L202 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:43,912 WARN L202 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:47,986 INFO L93 Difference]: Finished difference Result 2804 states and 3559 transitions. [2021-02-24 03:11:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 03:11:47,986 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2021-02-24 03:11:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:47,998 INFO L225 Difference]: With dead ends: 2804 [2021-02-24 03:11:47,998 INFO L226 Difference]: Without dead ends: 1771 [2021-02-24 03:11:48,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-24 03:11:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2021-02-24 03:11:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1172. [2021-02-24 03:11:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2021-02-24 03:11:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1342 transitions. [2021-02-24 03:11:48,508 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1342 transitions. Word has length 204 [2021-02-24 03:11:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:48,509 INFO L480 AbstractCegarLoop]: Abstraction has 1172 states and 1342 transitions. [2021-02-24 03:11:48,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 03:11:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1342 transitions. [2021-02-24 03:11:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-24 03:11:48,514 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:48,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:48,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 03:11:48,514 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:48,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:48,515 INFO L82 PathProgramCache]: Analyzing trace with hash 276108933, now seen corresponding path program 1 times [2021-02-24 03:11:48,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:48,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127220014] [2021-02-24 03:11:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:48,518 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:48,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:48,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:48,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:48,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:48,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:48,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:48,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:48,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:48,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:48,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:48,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:48,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,162 WARN L202 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:49,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:11:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:11:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:49,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:49,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:49,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-24 03:11:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-24 03:11:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:49,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:49,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:49,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127220014] [2021-02-24 03:11:49,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:49,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 03:11:49,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032214848] [2021-02-24 03:11:49,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 03:11:49,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:49,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 03:11:49,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-24 03:11:49,457 INFO L87 Difference]: Start difference. First operand 1172 states and 1342 transitions. Second operand 8 states. [2021-02-24 03:11:50,548 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:51,750 WARN L202 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:59,664 INFO L93 Difference]: Finished difference Result 4334 states and 5552 transitions. [2021-02-24 03:11:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 03:11:59,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2021-02-24 03:11:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:59,685 INFO L225 Difference]: With dead ends: 4334 [2021-02-24 03:11:59,685 INFO L226 Difference]: Without dead ends: 3277 [2021-02-24 03:11:59,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2021-02-24 03:11:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-02-24 03:12:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2352. [2021-02-24 03:12:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2021-02-24 03:12:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 2722 transitions. [2021-02-24 03:12:01,085 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 2722 transitions. Word has length 204 [2021-02-24 03:12:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:12:01,086 INFO L480 AbstractCegarLoop]: Abstraction has 2352 states and 2722 transitions. [2021-02-24 03:12:01,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 03:12:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 2722 transitions. [2021-02-24 03:12:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-24 03:12:01,090 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:12:01,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:12:01,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 03:12:01,091 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:12:01,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:12:01,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1887654999, now seen corresponding path program 1 times [2021-02-24 03:12:01,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:12:01,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700386342] [2021-02-24 03:12:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:12:01,095 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:12:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:12:01,199 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:12:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:12:01,286 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:12:01,555 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:12:01,555 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:12:01,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 03:12:01,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:12:01 BoogieIcfgContainer [2021-02-24 03:12:01,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:12:01,604 INFO L168 Benchmark]: Toolchain (without parser) took 85297.80 ms. Allocated memory was 158.3 MB in the beginning and 777.0 MB in the end (delta: 618.7 MB). Free memory was 133.4 MB in the beginning and 605.8 MB in the end (delta: -472.5 MB). Peak memory consumption was 146.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:12:01,604 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 158.3 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:12:01,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.02 ms. Allocated memory is still 158.3 MB. Free memory was 132.1 MB in the beginning and 110.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:12:01,611 INFO L168 Benchmark]: Boogie Preprocessor took 198.36 ms. Allocated memory is still 158.3 MB. Free memory was 110.5 MB in the beginning and 139.4 MB in the end (delta: -28.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:12:01,616 INFO L168 Benchmark]: RCFGBuilder took 1824.83 ms. Allocated memory was 158.3 MB in the beginning and 215.0 MB in the end (delta: 56.6 MB). Free memory was 138.9 MB in the beginning and 142.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:12:01,617 INFO L168 Benchmark]: TraceAbstraction took 82630.17 ms. Allocated memory was 215.0 MB in the beginning and 777.0 MB in the end (delta: 562.0 MB). Free memory was 142.6 MB in the beginning and 605.8 MB in the end (delta: -463.2 MB). Peak memory consumption was 98.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:12:01,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 158.3 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 624.02 ms. Allocated memory is still 158.3 MB. Free memory was 132.1 MB in the beginning and 110.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 198.36 ms. Allocated memory is still 158.3 MB. Free memory was 110.5 MB in the beginning and 139.4 MB in the end (delta: -28.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1824.83 ms. Allocated memory was 158.3 MB in the beginning and 215.0 MB in the end (delta: 56.6 MB). Free memory was 138.9 MB in the beginning and 142.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 82630.17 ms. Allocated memory was 215.0 MB in the beginning and 777.0 MB in the end (delta: 562.0 MB). Free memory was 142.6 MB in the beginning and 605.8 MB in the end (delta: -463.2 MB). Peak memory consumption was 98.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 385]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L460] int cleanupTimeShifts = 4; [L754] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L536] int retValue_acc ; [L537] int tmp ; [L541] FCALL select_helpers() [L542] FCALL select_features() [L543] CALL, EXPR valid_product() [L977] int retValue_acc ; [L980] retValue_acc = 1 [L981] return (retValue_acc); [L543] RET, EXPR valid_product() [L543] tmp = valid_product() [L545] COND TRUE \read(tmp) [L547] FCALL setup() [L548] CALL runTest() [L527] CALL test() [L392] int splverifierCounter ; [L393] int tmp ; [L394] int tmp___0 ; [L395] int tmp___1 ; [L396] int tmp___2 ; [L399] splverifierCounter = 0 [L401] COND TRUE 1 [L403] COND TRUE splverifierCounter < 4 [L409] tmp = __VERIFIER_nondet_int() [L411] COND TRUE \read(tmp) [L413] CALL waterRise() [L68] COND TRUE waterLevel < 2 [L69] waterLevel = waterLevel + 1 [L413] RET waterRise() [L419] tmp___0 = __VERIFIER_nondet_int() [L421] COND TRUE \read(tmp___0) [L423] CALL changeMethaneLevel() [L80] COND FALSE !(\read(methaneLevelCritical)) [L83] methaneLevelCritical = 1 [L423] RET changeMethaneLevel() [L429] tmp___2 = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp___2) [L433] CALL startSystem() [L376] systemActive = 1 [L433] RET startSystem() [L448] CALL timeShift() [L168] COND FALSE !(\read(pumpRunning)) [L175] COND TRUE \read(systemActive) [L177] CALL processEnvironment() [L223] int tmp ; [L226] COND FALSE !(\read(pumpRunning)) [L241] CALL processEnvironment__wrappee__highWaterSensor() [L197] int tmp ; [L200] COND TRUE ! pumpRunning [L202] CALL, EXPR isHighWaterLevel() [L320] int retValue_acc ; [L321] int tmp ; [L322] int tmp___0 ; [L326] CALL, EXPR isHighWaterSensorDry() [L130] int retValue_acc ; [L133] COND FALSE !(waterLevel < 2) [L137] retValue_acc = 0 [L138] return (retValue_acc); [L326] RET, EXPR isHighWaterSensorDry() [L326] tmp = isHighWaterSensorDry() [L328] COND FALSE !(\read(tmp)) [L331] tmp___0 = 1 [L333] retValue_acc = tmp___0 [L334] return (retValue_acc); [L202] RET, EXPR isHighWaterLevel() [L202] tmp = isHighWaterLevel() [L204] COND TRUE \read(tmp) [L206] CALL activatePump() [L251] pumpRunning = 1 [L206] RET activatePump() [L241] RET processEnvironment__wrappee__highWaterSensor() [L177] RET processEnvironment() [L183] CALL __utac_acc__Specification1_spec__1() [L560] int tmp ; [L561] int tmp___0 ; [L565] CALL, EXPR isMethaneLevelCritical() [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L565] RET, EXPR isMethaneLevelCritical() [L565] tmp = isMethaneLevelCritical() [L567] COND TRUE \read(tmp) [L569] CALL, EXPR isPumpRunning() [L275] int retValue_acc ; [L278] retValue_acc = pumpRunning [L279] return (retValue_acc); [L569] RET, EXPR isPumpRunning() [L569] tmp___0 = isPumpRunning() [L571] COND TRUE \read(tmp___0) [L573] CALL __automaton_fail() [L385] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 656 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 82.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 70.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2138 SDtfs, 4841 SDslu, 4439 SDs, 0 SdLazy, 9390 SolverSat, 1596 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 34.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2352occurred 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: 3.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 2704 StatesRemovedByMinimization, 8 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...