/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_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:31:53,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:31:53,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:31:53,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:31:53,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:31:53,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:31:53,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:31:53,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:31:53,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:31:53,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:31:53,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:31:53,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:31:53,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:31:53,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:31:53,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:31:53,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:31:53,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:31:53,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:31:53,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:31:53,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:31:53,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:31:53,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:31:53,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:31:53,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:31:53,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:31:53,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:31:53,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:31:53,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:31:53,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:31:53,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:31:53,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:31:53,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:31:53,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:31:53,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:31:53,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:31:53,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:31:53,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:31:53,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:31:53,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:31:53,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:31:53,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:31:53,972 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 19:31:53,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:31:53,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:31:53,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:31:53,987 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:31:53,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:31:53,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:31:53,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:31:53,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:31:53,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:31:53,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:31:53,988 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:31:53,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:31:53,989 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:31:53,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:31:53,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:31:53,990 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:31:53,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:31:53,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:31:53,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:31:53,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:31:53,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:31:53,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:31:53,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:31:54,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:31:54,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:31:54,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:31:54,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:31:54,400 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:31:54,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2021-02-21 19:31:54,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1ec86e2/eb642185329d46c3a3225a205c84b65c/FLAGcda84870a [2021-02-21 19:31:55,269 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:31:55,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2021-02-21 19:31:55,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1ec86e2/eb642185329d46c3a3225a205c84b65c/FLAGcda84870a [2021-02-21 19:31:55,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1ec86e2/eb642185329d46c3a3225a205c84b65c [2021-02-21 19:31:55,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:31:55,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:31:55,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:31:55,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:31:55,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:31:55,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:31:55" (1/1) ... [2021-02-21 19:31:55,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e673fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:55, skipping insertion in model container [2021-02-21 19:31:55,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:31:55" (1/1) ... [2021-02-21 19:31:55,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:31:55,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:31:56,003 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_product43.cil.c[4780,4793] [2021-02-21 19:31:56,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:31:56,096 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:31:56,193 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_product43.cil.c[4780,4793] [2021-02-21 19:31:56,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:31:56,348 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:31:56,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56 WrapperNode [2021-02-21 19:31:56,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:31:56,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:31:56,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:31:56,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:31:56,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (1/1) ... [2021-02-21 19:31:56,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (1/1) ... [2021-02-21 19:31:56,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (1/1) ... [2021-02-21 19:31:56,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (1/1) ... [2021-02-21 19:31:56,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (1/1) ... [2021-02-21 19:31:56,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (1/1) ... [2021-02-21 19:31:56,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (1/1) ... [2021-02-21 19:31:56,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:31:56,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:31:56,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:31:56,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:31:56,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (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 19:31:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:31:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:31:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:31:56,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:31:56,593 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:31:56,593 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:31:56,593 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:31:56,594 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:31:56,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:31:56,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:31:56,595 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:31:56,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:31:56,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:31:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:31:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:31:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:31:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:31:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:31:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:31:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:31:56,601 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:31:56,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:31:56,602 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:31:56,602 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:31:56,602 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:31:56,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:31:56,603 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:31:56,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:31:56,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:31:56,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:31:56,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:31:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:31:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:31:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:31:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:31:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:31:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:31:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:31:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:31:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:31:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:31:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:31:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:31:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:31:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:31:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:31:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:31:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:31:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:31:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:31:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:31:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:31:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:31:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:31:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:31:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:31:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:31:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:31:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:31:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:31:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:31:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:31:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:31:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:31:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:31:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:31:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:31:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:31:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:31:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:31:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:31:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:31:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:31:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:31:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:31:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:31:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:31:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:31:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:31:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:31:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:31:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:31:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:31:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:31:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:31:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:31:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:31:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:31:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:31:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:31:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:31:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:31:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:31:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:31:58,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:31:58,248 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:31:58,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:31:58 BoogieIcfgContainer [2021-02-21 19:31:58,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:31:58,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:31:58,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:31:58,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:31:58,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:31:55" (1/3) ... [2021-02-21 19:31:58,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2173a951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:31:58, skipping insertion in model container [2021-02-21 19:31:58,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:56" (2/3) ... [2021-02-21 19:31:58,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2173a951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:31:58, skipping insertion in model container [2021-02-21 19:31:58,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:31:58" (3/3) ... [2021-02-21 19:31:58,261 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2021-02-21 19:31:58,268 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:31:58,274 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:31:58,291 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:31:58,314 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:31:58,314 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:31:58,314 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:31:58,314 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:31:58,314 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:31:58,314 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:31:58,315 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:31:58,315 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:31:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2021-02-21 19:31:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:31:58,357 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:58,358 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] [2021-02-21 19:31:58,359 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:58,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1329130714, now seen corresponding path program 1 times [2021-02-21 19:31:58,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:58,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662198790] [2021-02-21 19:31:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:31:58,468 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:31:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:59,288 WARN L202 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:59,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:59,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:59,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:59,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:59,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:59,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:59,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:59,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:59,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:59,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:59,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:59,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:59,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:31:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:59,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:59,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:31:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:59,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:59,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:59,515 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 19:31:59,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662198790] [2021-02-21 19:31:59,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:59,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:31:59,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932311482] [2021-02-21 19:31:59,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:31:59,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:59,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:31:59,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:31:59,548 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 3 states. [2021-02-21 19:32:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:01,498 INFO L93 Difference]: Finished difference Result 491 states and 578 transitions. [2021-02-21 19:32:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:32:01,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:32:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:01,516 INFO L225 Difference]: With dead ends: 491 [2021-02-21 19:32:01,517 INFO L226 Difference]: Without dead ends: 306 [2021-02-21 19:32:01,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:32:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-21 19:32:01,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 263. [2021-02-21 19:32:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-21 19:32:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 283 transitions. [2021-02-21 19:32:01,712 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 283 transitions. Word has length 147 [2021-02-21 19:32:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:01,714 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 283 transitions. [2021-02-21 19:32:01,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:32:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 283 transitions. [2021-02-21 19:32:01,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:32:01,718 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:01,719 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 19:32:01,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:32:01,719 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:01,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:01,720 INFO L82 PathProgramCache]: Analyzing trace with hash -305967401, now seen corresponding path program 1 times [2021-02-21 19:32:01,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:01,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221431418] [2021-02-21 19:32:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:01,726 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:01,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:01,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:01,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:01,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:01,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:01,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:02,200 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:02,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:02,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:02,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:02,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:02,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:02,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:02,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:02,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:02,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:02,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:02,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:02,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:02,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:32:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:02,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:02,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:32:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:02,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:02,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:02,406 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 19:32:02,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221431418] [2021-02-21 19:32:02,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:02,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:32:02,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555484420] [2021-02-21 19:32:02,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:32:02,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:02,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:32:02,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:32:02,415 INFO L87 Difference]: Start difference. First operand 263 states and 283 transitions. Second operand 4 states. [2021-02-21 19:32:03,253 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:04,443 INFO L93 Difference]: Finished difference Result 398 states and 442 transitions. [2021-02-21 19:32:04,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:32:04,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:32:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:04,458 INFO L225 Difference]: With dead ends: 398 [2021-02-21 19:32:04,458 INFO L226 Difference]: Without dead ends: 289 [2021-02-21 19:32:04,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:32:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-21 19:32:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 253. [2021-02-21 19:32:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2021-02-21 19:32:04,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 270 transitions. [2021-02-21 19:32:04,614 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 270 transitions. Word has length 148 [2021-02-21 19:32:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:04,615 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 270 transitions. [2021-02-21 19:32:04,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:32:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 270 transitions. [2021-02-21 19:32:04,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:32:04,618 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:04,618 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] [2021-02-21 19:32:04,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:32:04,619 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:04,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:04,619 INFO L82 PathProgramCache]: Analyzing trace with hash 153687360, now seen corresponding path program 1 times [2021-02-21 19:32:04,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:04,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106312638] [2021-02-21 19:32:04,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:04,624 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:04,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:04,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:04,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:04,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:04,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:04,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:04,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:05,122 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:05,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:05,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:32:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:05,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:05,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:05,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:05,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:05,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:05,241 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:32:05,242 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:32:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:05,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:32:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:05,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:32:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:05,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:05,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:05,316 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 19:32:05,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106312638] [2021-02-21 19:32:05,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:05,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:32:05,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618017859] [2021-02-21 19:32:05,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:32:05,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:05,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:32:05,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:32:05,320 INFO L87 Difference]: Start difference. First operand 253 states and 270 transitions. Second operand 9 states. [2021-02-21 19:32:06,132 WARN L202 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:06,633 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:06,963 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:07,336 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:07,768 WARN L202 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:08,161 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:09,316 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:11,562 INFO L93 Difference]: Finished difference Result 660 states and 749 transitions. [2021-02-21 19:32:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:32:11,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:32:11,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:11,573 INFO L225 Difference]: With dead ends: 660 [2021-02-21 19:32:11,574 INFO L226 Difference]: Without dead ends: 522 [2021-02-21 19:32:11,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:32:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-02-21 19:32:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 443. [2021-02-21 19:32:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2021-02-21 19:32:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 487 transitions. [2021-02-21 19:32:11,890 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 487 transitions. Word has length 157 [2021-02-21 19:32:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:11,892 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 487 transitions. [2021-02-21 19:32:11,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:32:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 487 transitions. [2021-02-21 19:32:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-21 19:32:11,901 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:11,902 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] [2021-02-21 19:32:11,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:32:11,903 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:11,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:11,904 INFO L82 PathProgramCache]: Analyzing trace with hash 281694197, now seen corresponding path program 1 times [2021-02-21 19:32:11,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:11,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125954165] [2021-02-21 19:32:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:11,911 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:12,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:12,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:12,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:12,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:12,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,361 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:12,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:32:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:12,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:12,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 19:32:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 19:32:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:12,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:12,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:12,542 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 19:32:12,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125954165] [2021-02-21 19:32:12,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:12,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:32:12,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966897479] [2021-02-21 19:32:12,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:32:12,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:32:12,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:32:12,546 INFO L87 Difference]: Start difference. First operand 443 states and 487 transitions. Second operand 6 states. [2021-02-21 19:32:13,359 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:15,406 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:16,055 INFO L93 Difference]: Finished difference Result 1081 states and 1258 transitions. [2021-02-21 19:32:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:32:16,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2021-02-21 19:32:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:16,062 INFO L225 Difference]: With dead ends: 1081 [2021-02-21 19:32:16,062 INFO L226 Difference]: Without dead ends: 753 [2021-02-21 19:32:16,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:32:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-02-21 19:32:16,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 637. [2021-02-21 19:32:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2021-02-21 19:32:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 701 transitions. [2021-02-21 19:32:16,422 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 701 transitions. Word has length 165 [2021-02-21 19:32:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:16,423 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 701 transitions. [2021-02-21 19:32:16,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:32:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 701 transitions. [2021-02-21 19:32:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:32:16,425 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:16,426 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 19:32:16,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:32:16,426 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:16,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:16,427 INFO L82 PathProgramCache]: Analyzing trace with hash 756069138, now seen corresponding path program 1 times [2021-02-21 19:32:16,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:16,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030016753] [2021-02-21 19:32:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:16,431 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:16,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:16,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:16,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:16,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:16,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:16,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:16,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:16,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:16,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:16,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:16,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:16,858 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:16,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:16,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:32:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:16,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:16,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:16,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:16,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:16,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:16,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:16,947 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:32:16,952 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:32:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:16,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:16,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:32:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:17,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:17,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:17,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:32:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:17,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:17,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:17,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:17,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:17,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:17,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:32:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:17,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:17,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:17,099 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 19:32:17,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030016753] [2021-02-21 19:32:17,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:17,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:32:17,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366907205] [2021-02-21 19:32:17,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:32:17,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:17,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:32:17,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:32:17,105 INFO L87 Difference]: Start difference. First operand 637 states and 701 transitions. Second operand 14 states. [2021-02-21 19:32:17,747 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:18,241 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:18,625 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:19,002 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:19,360 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:19,728 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:20,518 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:21,400 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:21,800 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:22,268 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:22,718 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:23,095 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:32:23,476 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:23,862 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:24,311 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:24,779 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:32:25,209 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:26,830 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:27,227 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:27,737 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:29,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:29,763 INFO L93 Difference]: Finished difference Result 2107 states and 2504 transitions. [2021-02-21 19:32:29,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:32:29,764 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:32:29,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:29,776 INFO L225 Difference]: With dead ends: 2107 [2021-02-21 19:32:29,776 INFO L226 Difference]: Without dead ends: 1585 [2021-02-21 19:32:29,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:32:29,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-02-21 19:32:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1466. [2021-02-21 19:32:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1466 states. [2021-02-21 19:32:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1648 transitions. [2021-02-21 19:32:30,473 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1648 transitions. Word has length 166 [2021-02-21 19:32:30,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:30,473 INFO L480 AbstractCegarLoop]: Abstraction has 1466 states and 1648 transitions. [2021-02-21 19:32:30,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:32:30,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1648 transitions. [2021-02-21 19:32:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:32:30,479 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:30,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:30,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:32:30,480 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:30,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1962504124, now seen corresponding path program 1 times [2021-02-21 19:32:30,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:30,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038996805] [2021-02-21 19:32:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:31,169 WARN L202 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 119 [2021-02-21 19:32:31,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:31,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289