/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:30:09,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:30:09,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:30:09,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:30:09,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:30:09,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:30:09,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:30:09,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:30:09,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:30:09,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:30:09,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:30:09,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:30:09,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:30:09,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:30:09,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:30:09,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:30:09,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:30:09,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:30:09,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:30:09,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:30:09,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:30:09,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:30:09,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:30:09,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:30:09,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:30:09,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:30:09,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:30:09,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:30:09,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:30:09,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:30:09,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:30:09,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:30:09,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:30:09,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:30:09,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:30:09,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:30:09,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:30:09,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:30:09,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:30:09,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:30:09,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:30:09,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:30:09,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:30:09,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:30:09,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:30:09,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:30:09,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:30:09,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:30:09,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:30:09,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:30:09,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:30:09,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:30:09,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:30:09,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:30:09,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:30:09,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:30:09,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:30:09,325 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:30:09,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:30:09,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:30:09,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:30:09,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:30:09,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:30:09,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:30:09,327 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:30:09,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:30:09,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:30:09,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:30:09,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:30:09,815 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:30:09,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2021-02-21 19:30:09,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800b5051e/466bd1e7436e4029967b5334d67fc0ff/FLAG6ac4c15c7 [2021-02-21 19:30:10,632 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:30:10,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2021-02-21 19:30:10,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800b5051e/466bd1e7436e4029967b5334d67fc0ff/FLAG6ac4c15c7 [2021-02-21 19:30:10,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800b5051e/466bd1e7436e4029967b5334d67fc0ff [2021-02-21 19:30:10,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:30:10,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:30:10,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:30:10,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:30:10,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:30:10,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:30:10" (1/1) ... [2021-02-21 19:30:10,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1468998f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:10, skipping insertion in model container [2021-02-21 19:30:10,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:30:10" (1/1) ... [2021-02-21 19:30:10,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:30:11,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:30:11,440 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c[6303,6316] [2021-02-21 19:30:11,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:30:11,566 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:30:11,601 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c[6303,6316] [2021-02-21 19:30:11,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:30:11,693 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:30:11,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11 WrapperNode [2021-02-21 19:30:11,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:30:11,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:30:11,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:30:11,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:30:11,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (1/1) ... [2021-02-21 19:30:11,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (1/1) ... [2021-02-21 19:30:11,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (1/1) ... [2021-02-21 19:30:11,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (1/1) ... [2021-02-21 19:30:11,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (1/1) ... [2021-02-21 19:30:11,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (1/1) ... [2021-02-21 19:30:11,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (1/1) ... [2021-02-21 19:30:11,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:30:11,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:30:11,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:30:11,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:30:11,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:30:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:30:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:30:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:30:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:30:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:30:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:30:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:30:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:30:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:30:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:30:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:30:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:30:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:30:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:30:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:30:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:30:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:30:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:30:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:30:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:30:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:30:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:30:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:30:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:30:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:30:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:30:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:30:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:30:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:30:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:30:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:30:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:30:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:30:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:30:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:30:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:30:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:30:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:30:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:30:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:30:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:30:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:30:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:30:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:30:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:30:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:30:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:30:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:30:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:30:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:30:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:30:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:30:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:30:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:30:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:30:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:30:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:30:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:30:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:30:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:30:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:30:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:30:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:30:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:30:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:30:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:30:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:30:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:30:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:30:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:30:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:30:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:30:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:30:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:30:13,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:30:13,303 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:30:13,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:30:13 BoogieIcfgContainer [2021-02-21 19:30:13,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:30:13,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:30:13,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:30:13,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:30:13,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:30:10" (1/3) ... [2021-02-21 19:30:13,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc063c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:30:13, skipping insertion in model container [2021-02-21 19:30:13,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:30:11" (2/3) ... [2021-02-21 19:30:13,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc063c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:30:13, skipping insertion in model container [2021-02-21 19:30:13,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:30:13" (3/3) ... [2021-02-21 19:30:13,320 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2021-02-21 19:30:13,332 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:30:13,339 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:30:13,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:30:13,392 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:30:13,392 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:30:13,392 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:30:13,392 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:30:13,393 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:30:13,393 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:30:13,394 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:30:13,394 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:30:13,431 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2021-02-21 19:30:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:30:13,466 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:13,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:30:13,468 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:13,477 INFO L82 PathProgramCache]: Analyzing trace with hash 746784282, now seen corresponding path program 1 times [2021-02-21 19:30:13,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:13,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788032699] [2021-02-21 19:30:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:13,563 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:13,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:13,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:13,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:13,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:14,295 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:14,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:14,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:14,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:14,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:14,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:14,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:14,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:14,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:14,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:14,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:14,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:14,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:14,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:14,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:30:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:14,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:14,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:30:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:14,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:14,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:14,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788032699] [2021-02-21 19:30:14,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:14,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:30:14,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820474342] [2021-02-21 19:30:14,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:30:14,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:14,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:30:14,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:30:14,542 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 3 states. [2021-02-21 19:30:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:16,019 INFO L93 Difference]: Finished difference Result 454 states and 540 transitions. [2021-02-21 19:30:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:30:16,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:30:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:16,051 INFO L225 Difference]: With dead ends: 454 [2021-02-21 19:30:16,051 INFO L226 Difference]: Without dead ends: 287 [2021-02-21 19:30:16,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:30:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-21 19:30:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 245. [2021-02-21 19:30:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-21 19:30:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2021-02-21 19:30:16,258 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 147 [2021-02-21 19:30:16,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:16,259 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2021-02-21 19:30:16,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:30:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2021-02-21 19:30:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:30:16,264 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:16,264 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] [2021-02-21 19:30:16,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:30:16,265 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:16,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:16,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1460831127, now seen corresponding path program 1 times [2021-02-21 19:30:16,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:16,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648707527] [2021-02-21 19:30:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:16,271 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:16,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:16,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,697 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:16,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:16,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:16,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:16,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:16,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:16,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:30:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:16,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:30:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:16,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:16,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:16,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648707527] [2021-02-21 19:30:16,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:16,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:30:16,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825736924] [2021-02-21 19:30:16,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:30:16,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:16,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:30:16,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:30:16,845 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 4 states. [2021-02-21 19:30:17,519 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:18,385 INFO L93 Difference]: Finished difference Result 357 states and 400 transitions. [2021-02-21 19:30:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:30:18,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:30:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:18,395 INFO L225 Difference]: With dead ends: 357 [2021-02-21 19:30:18,396 INFO L226 Difference]: Without dead ends: 270 [2021-02-21 19:30:18,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:30:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-21 19:30:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-02-21 19:30:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-21 19:30:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 251 transitions. [2021-02-21 19:30:18,521 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 251 transitions. Word has length 148 [2021-02-21 19:30:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:18,521 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 251 transitions. [2021-02-21 19:30:18,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:30:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 251 transitions. [2021-02-21 19:30:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:30:18,524 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:18,524 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] [2021-02-21 19:30:18,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:30:18,525 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1301591800, now seen corresponding path program 1 times [2021-02-21 19:30:18,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:18,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112346590] [2021-02-21 19:30:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:18,530 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:18,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:18,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:18,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:18,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:18,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:18,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:18,919 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:18,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:18,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:18,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:18,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:18,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:18,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:18,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:18,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:30:19,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:19,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:30:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:19,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:19,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:19,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:30:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:19,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:19,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:30:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:19,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:19,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:30:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:19,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:19,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:19,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112346590] [2021-02-21 19:30:19,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:19,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:30:19,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609228467] [2021-02-21 19:30:19,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:30:19,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:19,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:30:19,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:30:19,095 INFO L87 Difference]: Start difference. First operand 235 states and 251 transitions. Second operand 10 states. [2021-02-21 19:30:19,656 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:30:20,005 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:30:20,295 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:30:20,594 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:20,896 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:21,185 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:22,112 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:23,949 INFO L93 Difference]: Finished difference Result 626 states and 727 transitions. [2021-02-21 19:30:23,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:30:23,952 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:30:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:23,960 INFO L225 Difference]: With dead ends: 626 [2021-02-21 19:30:23,960 INFO L226 Difference]: Without dead ends: 506 [2021-02-21 19:30:23,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:30:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-02-21 19:30:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 403. [2021-02-21 19:30:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-21 19:30:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 445 transitions. [2021-02-21 19:30:24,201 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 445 transitions. Word has length 161 [2021-02-21 19:30:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:24,203 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 445 transitions. [2021-02-21 19:30:24,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:30:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 445 transitions. [2021-02-21 19:30:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:30:24,206 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:24,206 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] [2021-02-21 19:30:24,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:30:24,206 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:24,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:24,207 INFO L82 PathProgramCache]: Analyzing trace with hash 443628389, now seen corresponding path program 1 times [2021-02-21 19:30:24,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:24,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154696376] [2021-02-21 19:30:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:24,212 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:24,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:24,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:24,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:24,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:24,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:24,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:24,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:24,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:24,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:30:24,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,587 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:30:24,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:30:24,715 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:30:24,716 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:30:24,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:30:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:30:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:24,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:24,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:30:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:24,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:24,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:24,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154696376] [2021-02-21 19:30:24,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:24,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:30:24,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904926137] [2021-02-21 19:30:24,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:30:24,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:24,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:30:24,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:30:24,921 INFO L87 Difference]: Start difference. First operand 403 states and 445 transitions. Second operand 14 states. [2021-02-21 19:30:25,726 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:30:26,195 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:30:26,481 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:30:26,807 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:27,096 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:27,377 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:28,017 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:30:29,117 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:29,451 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:29,861 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:30,198 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:30:30,486 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:30:30,845 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:30:31,163 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:30:31,464 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:31,743 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:32,115 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:32,502 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:30:32,825 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:30:33,171 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:30:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:34,927 INFO L93 Difference]: Finished difference Result 1341 states and 1682 transitions. [2021-02-21 19:30:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:30:34,928 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:30:34,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:34,938 INFO L225 Difference]: With dead ends: 1341 [2021-02-21 19:30:34,938 INFO L226 Difference]: Without dead ends: 1053 [2021-02-21 19:30:34,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:30:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-02-21 19:30:35,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 918. [2021-02-21 19:30:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2021-02-21 19:30:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1070 transitions. [2021-02-21 19:30:35,353 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1070 transitions. Word has length 166 [2021-02-21 19:30:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:35,354 INFO L480 AbstractCegarLoop]: Abstraction has 918 states and 1070 transitions. [2021-02-21 19:30:35,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:30:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1070 transitions. [2021-02-21 19:30:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:30:35,358 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:35,358 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] [2021-02-21 19:30:35,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:30:35,359 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:35,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1847034458, now seen corresponding path program 1 times [2021-02-21 19:30:35,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:35,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050095223] [2021-02-21 19:30:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:35,363 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:30:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:35,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:35,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:35,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:35,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:35,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:35,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,655 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:30:35,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:30:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:30:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:30:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:30:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:30:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:30:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:30:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:30:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:30:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:30:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:30:35,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:35,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:30:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:30:35,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050095223] [2021-02-21 19:30:35,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:30:35,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:30:35,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126163600] [2021-02-21 19:30:35,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:30:35,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:30:35,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:30:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:30:35,810 INFO L87 Difference]: Start difference. First operand 918 states and 1070 transitions. Second operand 6 states. [2021-02-21 19:30:36,319 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:30:38,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:30:38,536 INFO L93 Difference]: Finished difference Result 2185 states and 2687 transitions. [2021-02-21 19:30:38,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:30:38,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:30:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:30:38,548 INFO L225 Difference]: With dead ends: 2185 [2021-02-21 19:30:38,548 INFO L226 Difference]: Without dead ends: 1382 [2021-02-21 19:30:38,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:30:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-02-21 19:30:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1279. [2021-02-21 19:30:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2021-02-21 19:30:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1497 transitions. [2021-02-21 19:30:39,388 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1497 transitions. Word has length 171 [2021-02-21 19:30:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:30:39,389 INFO L480 AbstractCegarLoop]: Abstraction has 1279 states and 1497 transitions. [2021-02-21 19:30:39,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:30:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1497 transitions. [2021-02-21 19:30:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:30:39,398 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:30:39,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:30:39,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:30:39,399 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:30:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:30:39,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1492250991, now seen corresponding path program 1 times [2021-02-21 19:30:39,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:30:39,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753754990] [2021-02-21 19:30:39,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:30:39,989 WARN L202 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 119 [2021-02-21 19:30:40,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:30:40,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289