/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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:30:02,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:30:02,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:30:02,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:30:02,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:30:02,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:30:02,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:30:02,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:30:02,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:30:02,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:30:02,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:30:02,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:30:02,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:30:02,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:30:02,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:30:02,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:30:02,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:30:02,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:30:02,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:30:02,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:30:02,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:30:02,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:30:02,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:30:02,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:30:02,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:30:02,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:30:02,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:30:02,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:30:03,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:30:03,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:30:03,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:30:03,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:30:03,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:30:03,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:30:03,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:30:03,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:30:03,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:30:03,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:30:03,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:30:03,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:30:03,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:30:03,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:30:03,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:30:03,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:30:03,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:30:03,045 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:30:03,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:30:03,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:30:03,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:30:03,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:30:03,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:30:03,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:30:03,047 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:30:03,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:30:03,047 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:30:03,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:30:03,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:30:03,048 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:30:03,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:30:03,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:30:03,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:30:03,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:30:03,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:30:03,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:30:03,049 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:30:03,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:30:03,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:30:03,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:30:03,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:30:03,488 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:30:03,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product09.cil.c [2021-02-23 16:30:03,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ebb36d9f/2e7e4f45fc1c42d39eadbbdafeec902e/FLAGc9ae6090b [2021-02-23 16:30:04,366 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:30:04,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product09.cil.c [2021-02-23 16:30:04,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ebb36d9f/2e7e4f45fc1c42d39eadbbdafeec902e/FLAGc9ae6090b [2021-02-23 16:30:04,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ebb36d9f/2e7e4f45fc1c42d39eadbbdafeec902e [2021-02-23 16:30:04,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:30:04,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:30:04,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:30:04,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:30:04,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:30:04,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:30:04" (1/1) ... [2021-02-23 16:30:04,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c97ced2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:04, skipping insertion in model container [2021-02-23 16:30:04,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:30:04" (1/1) ... [2021-02-23 16:30:04,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:30:04,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:30:04,935 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_product09.cil.c[10968,10981] [2021-02-23 16:30:05,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:30:05,046 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:30:05,222 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_product09.cil.c[10968,10981] [2021-02-23 16:30:05,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:30:05,320 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:30:05,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05 WrapperNode [2021-02-23 16:30:05,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:30:05,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:30:05,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:30:05,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:30:05,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (1/1) ... [2021-02-23 16:30:05,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (1/1) ... [2021-02-23 16:30:05,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (1/1) ... [2021-02-23 16:30:05,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (1/1) ... [2021-02-23 16:30:05,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (1/1) ... [2021-02-23 16:30:05,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (1/1) ... [2021-02-23 16:30:05,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (1/1) ... [2021-02-23 16:30:05,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:30:05,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:30:05,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:30:05,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:30:05,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:30:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:30:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:30:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:30:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:30:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:30:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:30:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:30:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:30:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:30:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:30:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:30:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:30:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:30:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:30:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:30:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:30:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:30:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:30:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:30:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:30:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:30:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:30:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:30:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:30:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:30:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:30:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:30:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:30:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:30:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:30:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:30:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:30:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:30:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:30:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:30:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:30:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:30:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:30:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:30:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:30:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:30:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:30:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:30:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:30:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:30:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:30:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:30:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:30:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:30:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:30:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:30:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:30:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:30:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:30:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:30:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:30:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:30:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:30:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:30:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:30:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:30:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:30:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:30:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:30:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:30:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:30:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:30:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:30:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:30:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:30:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:30:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:30:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:30:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:30:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:30:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:30:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:30:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:30:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:30:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:30:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:30:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:30:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:30:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:30:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:30:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:30:06,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:30:06,750 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:30:06,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:30:06 BoogieIcfgContainer [2021-02-23 16:30:06,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:30:06,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:30:06,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:30:06,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:30:06,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:30:04" (1/3) ... [2021-02-23 16:30:06,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef747e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:30:06, skipping insertion in model container [2021-02-23 16:30:06,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:30:05" (2/3) ... [2021-02-23 16:30:06,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef747e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:30:06, skipping insertion in model container [2021-02-23 16:30:06,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:30:06" (3/3) ... [2021-02-23 16:30:06,780 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product09.cil.c [2021-02-23 16:30:06,806 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:30:06,822 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:30:06,865 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:30:06,911 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:30:06,911 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:30:06,911 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:30:06,911 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:30:06,911 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:30:06,912 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:30:06,912 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:30:06,912 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:30:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states. [2021-02-23 16:30:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:30:06,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:06,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:30:06,958 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1171283710, now seen corresponding path program 1 times [2021-02-23 16:30:06,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:06,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213142202] [2021-02-23 16:30:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:30:07,072 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:30:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:07,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:07,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:07,850 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:30:07,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:30:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:07,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:30:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:07,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:07,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:30:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:07,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:30:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:07,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:30:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:07,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:07,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:30:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:07,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:30:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:07,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:07,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:30:08,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213142202] [2021-02-23 16:30:08,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:30:08,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:30:08,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590531663] [2021-02-23 16:30:08,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:30:08,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:30:08,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:30:08,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:30:08,066 INFO L87 Difference]: Start difference. First operand 247 states. Second operand 3 states. [2021-02-23 16:30:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:09,433 INFO L93 Difference]: Finished difference Result 349 states and 420 transitions. [2021-02-23 16:30:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:30:09,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:30:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:09,451 INFO L225 Difference]: With dead ends: 349 [2021-02-23 16:30:09,451 INFO L226 Difference]: Without dead ends: 232 [2021-02-23 16:30:09,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:30:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-02-23 16:30:09,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 195. [2021-02-23 16:30:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2021-02-23 16:30:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 208 transitions. [2021-02-23 16:30:09,649 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 208 transitions. Word has length 147 [2021-02-23 16:30:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:09,650 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 208 transitions. [2021-02-23 16:30:09,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:30:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 208 transitions. [2021-02-23 16:30:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:30:09,655 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:09,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:30:09,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:30:09,656 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:09,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1292890251, now seen corresponding path program 1 times [2021-02-23 16:30:09,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:09,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718198027] [2021-02-23 16:30:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:30:09,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:30:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:09,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:09,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:09,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:09,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:09,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:09,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,162 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:30:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:30:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:30:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:30:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:30:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:30:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:30:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:30:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:10,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:10,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:30:10,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718198027] [2021-02-23 16:30:10,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:30:10,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:30:10,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825520110] [2021-02-23 16:30:10,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:30:10,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:30:10,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:30:10,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:30:10,276 INFO L87 Difference]: Start difference. First operand 195 states and 208 transitions. Second operand 4 states. [2021-02-23 16:30:11,037 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:30:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:11,642 INFO L93 Difference]: Finished difference Result 265 states and 294 transitions. [2021-02-23 16:30:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:30:11,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:30:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:11,649 INFO L225 Difference]: With dead ends: 265 [2021-02-23 16:30:11,649 INFO L226 Difference]: Without dead ends: 215 [2021-02-23 16:30:11,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:30:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-02-23 16:30:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 185. [2021-02-23 16:30:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-02-23 16:30:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 195 transitions. [2021-02-23 16:30:11,729 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 195 transitions. Word has length 148 [2021-02-23 16:30:11,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:11,730 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 195 transitions. [2021-02-23 16:30:11,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:30:11,730 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 195 transitions. [2021-02-23 16:30:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:30:11,733 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:11,733 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] [2021-02-23 16:30:11,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:30:11,733 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:11,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:11,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2145746137, now seen corresponding path program 1 times [2021-02-23 16:30:11,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:11,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397062907] [2021-02-23 16:30:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:30:11,739 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:30:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:11,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:11,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:11,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:11,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:11,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:11,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:11,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:11,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:30:11,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:11,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:12,183 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:30:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:30:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:12,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:12,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:30:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:30:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:12,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:12,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:30:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:12,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:12,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:30:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:12,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:12,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:30:12,388 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:30:12,389 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:30:12,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:30:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:12,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:30:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:12,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:12,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:30:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:12,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:12,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:12,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:30:12,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397062907] [2021-02-23 16:30:12,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:30:12,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:30:12,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233502091] [2021-02-23 16:30:12,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:30:12,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:30:12,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:30:12,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:30:12,578 INFO L87 Difference]: Start difference. First operand 185 states and 195 transitions. Second operand 9 states. [2021-02-23 16:30:13,359 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:30:13,831 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:30:14,161 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:30:14,526 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:14,891 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:15,249 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:16,227 INFO L93 Difference]: Finished difference Result 285 states and 319 transitions. [2021-02-23 16:30:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:30:16,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:30:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:16,231 INFO L225 Difference]: With dead ends: 285 [2021-02-23 16:30:16,231 INFO L226 Difference]: Without dead ends: 215 [2021-02-23 16:30:16,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:30:16,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-02-23 16:30:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 185. [2021-02-23 16:30:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-02-23 16:30:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 194 transitions. [2021-02-23 16:30:16,347 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 194 transitions. Word has length 157 [2021-02-23 16:30:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:16,347 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 194 transitions. [2021-02-23 16:30:16,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:30:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 194 transitions. [2021-02-23 16:30:16,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-23 16:30:16,350 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:16,350 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] [2021-02-23 16:30:16,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:30:16,351 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:16,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:16,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1301106321, now seen corresponding path program 1 times [2021-02-23 16:30:16,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:16,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511190919] [2021-02-23 16:30:16,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:30:16,356 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:30:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:16,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:16,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:16,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:16,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:16,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:30:16,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:30:16,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:30:16,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:30:16,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:30:16,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:30:16,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:16,821 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:30:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:30:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:16,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:16,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:30:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:30:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:16,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:30:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:16,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:30:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:16,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:16,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:30:16,932 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:30:16,934 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:30:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:30:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:16,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:16,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:30:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:16,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:16,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:30:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:16,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:16,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:16,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:16,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:17,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:30:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:17,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:17,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:30:17,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511190919] [2021-02-23 16:30:17,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:30:17,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 16:30:17,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243724499] [2021-02-23 16:30:17,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 16:30:17,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:30:17,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 16:30:17,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-02-23 16:30:17,061 INFO L87 Difference]: Start difference. First operand 185 states and 194 transitions. Second operand 13 states. [2021-02-23 16:30:17,756 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:30:18,192 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:30:18,566 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:30:18,934 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:19,272 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:19,654 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:20,379 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:30:21,200 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:21,571 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:21,935 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:22,317 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:30:22,654 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:30:23,012 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:30:23,373 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:30:23,738 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:24,095 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:24,484 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:24,924 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:30:25,311 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:30:25,697 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:30:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:26,314 INFO L93 Difference]: Finished difference Result 396 states and 457 transitions. [2021-02-23 16:30:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 16:30:26,315 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2021-02-23 16:30:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:26,319 INFO L225 Difference]: With dead ends: 396 [2021-02-23 16:30:26,319 INFO L226 Difference]: Without dead ends: 326 [2021-02-23 16:30:26,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 16:30:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-02-23 16:30:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 299. [2021-02-23 16:30:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2021-02-23 16:30:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 327 transitions. [2021-02-23 16:30:26,468 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 327 transitions. Word has length 160 [2021-02-23 16:30:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:26,469 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 327 transitions. [2021-02-23 16:30:26,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 16:30:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 327 transitions. [2021-02-23 16:30:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:30:26,472 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:26,472 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] [2021-02-23 16:30:26,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:30:26,473 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:26,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1429734595, now seen corresponding path program 1 times [2021-02-23 16:30:26,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:26,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669096304] [2021-02-23 16:30:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:30:26,477 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:30:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:26,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,812 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:30:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:30:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:30:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:30:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:30:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:30:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:30:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:30:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:30:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:30:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:30:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:30:26,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:26,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:30:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:30:26,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669096304] [2021-02-23 16:30:26,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:30:26,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 16:30:26,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113563743] [2021-02-23 16:30:26,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 16:30:26,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:30:26,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 16:30:26,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:30:26,938 INFO L87 Difference]: Start difference. First operand 299 states and 327 transitions. Second operand 5 states. [2021-02-23 16:30:27,513 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:30:28,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:30:28,154 INFO L93 Difference]: Finished difference Result 434 states and 488 transitions. [2021-02-23 16:30:28,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 16:30:28,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2021-02-23 16:30:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:30:28,158 INFO L225 Difference]: With dead ends: 434 [2021-02-23 16:30:28,158 INFO L226 Difference]: Without dead ends: 302 [2021-02-23 16:30:28,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:30:28,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-02-23 16:30:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 281. [2021-02-23 16:30:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-23 16:30:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 298 transitions. [2021-02-23 16:30:28,271 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 298 transitions. Word has length 165 [2021-02-23 16:30:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:30:28,271 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 298 transitions. [2021-02-23 16:30:28,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 16:30:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 298 transitions. [2021-02-23 16:30:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-02-23 16:30:28,274 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:30:28,275 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] [2021-02-23 16:30:28,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:30:28,275 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:30:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:30:28,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1091384090, now seen corresponding path program 1 times [2021-02-23 16:30:28,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:30:28,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753650209] [2021-02-23 16:30:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:30:28,823 WARN L202 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 116 [2021-02-23 16:30:28,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:30:28,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248