/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/eca-rers2012/Problem10_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 13:32:06,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 13:32:06,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 13:32:06,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 13:32:06,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 13:32:06,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 13:32:06,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 13:32:06,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 13:32:06,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 13:32:06,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 13:32:06,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 13:32:06,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 13:32:06,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 13:32:06,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 13:32:06,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 13:32:06,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 13:32:06,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 13:32:06,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 13:32:06,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 13:32:06,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 13:32:06,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 13:32:06,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 13:32:06,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 13:32:06,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 13:32:06,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 13:32:06,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 13:32:06,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 13:32:06,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 13:32:06,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 13:32:06,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 13:32:06,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 13:32:06,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 13:32:06,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 13:32:06,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 13:32:06,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 13:32:06,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 13:32:06,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 13:32:06,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 13:32:06,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 13:32:06,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 13:32:06,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 13:32:06,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 13:32:06,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 13:32:06,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 13:32:06,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 13:32:06,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 13:32:06,776 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 13:32:06,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 13:32:06,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 13:32:06,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 13:32:06,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 13:32:06,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 13:32:06,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 13:32:06,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 13:32:06,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 13:32:06,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 13:32:06,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 13:32:06,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 13:32:06,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 13:32:06,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 13:32:06,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 13:32:06,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 13:32:06,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 13:32:06,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 13:32:06,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 13:32:06,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 13:32:06,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 13:32:06,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 13:32:07,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 13:32:07,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 13:32:07,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 13:32:07,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 13:32:07,271 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 13:32:07,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem10_label47.c [2021-01-06 13:32:07,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e314d6250/4382accb7bd742709e032ea55010438f/FLAGc8339ea5b [2021-01-06 13:32:08,093 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 13:32:08,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label47.c [2021-01-06 13:32:08,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e314d6250/4382accb7bd742709e032ea55010438f/FLAGc8339ea5b [2021-01-06 13:32:08,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e314d6250/4382accb7bd742709e032ea55010438f [2021-01-06 13:32:08,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 13:32:08,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 13:32:08,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 13:32:08,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 13:32:08,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 13:32:08,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 01:32:08" (1/1) ... [2021-01-06 13:32:08,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1a54d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:08, skipping insertion in model container [2021-01-06 13:32:08,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 01:32:08" (1/1) ... [2021-01-06 13:32:08,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 13:32:08,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 13:32:08,655 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label47.c[2379,2392] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~input~0,] left hand side expression in assignment: lhs: VariableLHS[~output~0,] [2021-01-06 13:32:08,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 13:32:09,004 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 13:32:09,045 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label47.c[2379,2392] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~input~0,] left hand side expression in assignment: lhs: VariableLHS[~output~0,] [2021-01-06 13:32:09,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 13:32:09,258 INFO L208 MainTranslator]: Completed translation [2021-01-06 13:32:09,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09 WrapperNode [2021-01-06 13:32:09,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 13:32:09,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 13:32:09,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 13:32:09,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 13:32:09,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 13:32:09,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 13:32:09,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 13:32:09,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 13:32:09,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... [2021-01-06 13:32:09,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 13:32:09,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 13:32:09,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 13:32:09,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 13:32:09,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 13:32:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 13:32:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 13:32:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 13:32:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 13:32:11,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 13:32:11,129 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 13:32:11,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 01:32:11 BoogieIcfgContainer [2021-01-06 13:32:11,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 13:32:11,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 13:32:11,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 13:32:11,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 13:32:11,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 01:32:08" (1/3) ... [2021-01-06 13:32:11,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865991c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 01:32:11, skipping insertion in model container [2021-01-06 13:32:11,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 01:32:09" (2/3) ... [2021-01-06 13:32:11,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865991c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 01:32:11, skipping insertion in model container [2021-01-06 13:32:11,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 01:32:11" (3/3) ... [2021-01-06 13:32:11,147 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label47.c [2021-01-06 13:32:11,157 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 13:32:11,163 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 13:32:11,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 13:32:11,213 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 13:32:11,213 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 13:32:11,213 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 13:32:11,213 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 13:32:11,213 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 13:32:11,213 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 13:32:11,214 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 13:32:11,214 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 13:32:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2021-01-06 13:32:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 13:32:11,243 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:11,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 13:32:11,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:11,252 INFO L82 PathProgramCache]: Analyzing trace with hash 406614337, now seen corresponding path program 1 times [2021-01-06 13:32:11,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:11,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531180299] [2021-01-06 13:32:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:11,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531180299] [2021-01-06 13:32:11,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 13:32:11,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 13:32:11,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711121933] [2021-01-06 13:32:11,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 13:32:11,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:11,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 13:32:11,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:11,552 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 3 states. [2021-01-06 13:32:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:12,574 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2021-01-06 13:32:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 13:32:12,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-06 13:32:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:12,602 INFO L225 Difference]: With dead ends: 552 [2021-01-06 13:32:12,602 INFO L226 Difference]: Without dead ends: 282 [2021-01-06 13:32:12,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-01-06 13:32:12,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-01-06 13:32:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-01-06 13:32:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 377 transitions. [2021-01-06 13:32:12,718 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 377 transitions. Word has length 19 [2021-01-06 13:32:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:12,719 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 377 transitions. [2021-01-06 13:32:12,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 13:32:12,719 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 377 transitions. [2021-01-06 13:32:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-01-06 13:32:12,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:12,725 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 13:32:12,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 13:32:12,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:12,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:12,727 INFO L82 PathProgramCache]: Analyzing trace with hash 367126868, now seen corresponding path program 1 times [2021-01-06 13:32:12,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:12,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948183818] [2021-01-06 13:32:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:13,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948183818] [2021-01-06 13:32:13,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225109571] [2021-01-06 13:32:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 13:32:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:13,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2021-01-06 13:32:13,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 13:32:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-06 13:32:13,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 13:32:13,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-01-06 13:32:13,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996127730] [2021-01-06 13:32:13,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 13:32:13,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:13,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 13:32:13,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 13:32:13,269 INFO L87 Difference]: Start difference. First operand 282 states and 377 transitions. Second operand 3 states. [2021-01-06 13:32:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:13,947 INFO L93 Difference]: Finished difference Result 562 states and 752 transitions. [2021-01-06 13:32:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 13:32:13,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2021-01-06 13:32:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:13,952 INFO L225 Difference]: With dead ends: 562 [2021-01-06 13:32:13,952 INFO L226 Difference]: Without dead ends: 560 [2021-01-06 13:32:13,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 13:32:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-01-06 13:32:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 421. [2021-01-06 13:32:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2021-01-06 13:32:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 591 transitions. [2021-01-06 13:32:13,972 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 591 transitions. Word has length 85 [2021-01-06 13:32:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:13,973 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 591 transitions. [2021-01-06 13:32:13,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 13:32:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 591 transitions. [2021-01-06 13:32:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-01-06 13:32:13,977 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:13,977 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 13:32:14,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 13:32:14,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash -682221447, now seen corresponding path program 1 times [2021-01-06 13:32:14,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:14,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513521399] [2021-01-06 13:32:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:14,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513521399] [2021-01-06 13:32:14,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 13:32:14,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 13:32:14,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132799297] [2021-01-06 13:32:14,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 13:32:14,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:14,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 13:32:14,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:14,348 INFO L87 Difference]: Start difference. First operand 421 states and 591 transitions. Second operand 3 states. [2021-01-06 13:32:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:14,979 INFO L93 Difference]: Finished difference Result 979 states and 1339 transitions. [2021-01-06 13:32:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 13:32:14,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2021-01-06 13:32:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:14,987 INFO L225 Difference]: With dead ends: 979 [2021-01-06 13:32:14,987 INFO L226 Difference]: Without dead ends: 560 [2021-01-06 13:32:14,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:14,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-01-06 13:32:15,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-01-06 13:32:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2021-01-06 13:32:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 740 transitions. [2021-01-06 13:32:15,005 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 740 transitions. Word has length 88 [2021-01-06 13:32:15,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:15,006 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 740 transitions. [2021-01-06 13:32:15,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 13:32:15,006 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 740 transitions. [2021-01-06 13:32:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-06 13:32:15,010 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:15,010 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 13:32:15,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 13:32:15,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:15,011 INFO L82 PathProgramCache]: Analyzing trace with hash -124156760, now seen corresponding path program 1 times [2021-01-06 13:32:15,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:15,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992355178] [2021-01-06 13:32:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:15,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992355178] [2021-01-06 13:32:15,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 13:32:15,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 13:32:15,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975992211] [2021-01-06 13:32:15,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 13:32:15,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:15,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 13:32:15,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:15,105 INFO L87 Difference]: Start difference. First operand 560 states and 740 transitions. Second operand 3 states. [2021-01-06 13:32:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:15,841 INFO L93 Difference]: Finished difference Result 1257 states and 1758 transitions. [2021-01-06 13:32:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 13:32:15,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2021-01-06 13:32:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:15,847 INFO L225 Difference]: With dead ends: 1257 [2021-01-06 13:32:15,847 INFO L226 Difference]: Without dead ends: 838 [2021-01-06 13:32:15,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-01-06 13:32:15,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 699. [2021-01-06 13:32:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2021-01-06 13:32:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 914 transitions. [2021-01-06 13:32:15,867 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 914 transitions. Word has length 94 [2021-01-06 13:32:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:15,868 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 914 transitions. [2021-01-06 13:32:15,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 13:32:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 914 transitions. [2021-01-06 13:32:15,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-01-06 13:32:15,874 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:15,874 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-01-06 13:32:15,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 13:32:15,875 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:15,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1497181114, now seen corresponding path program 1 times [2021-01-06 13:32:15,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:15,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294421967] [2021-01-06 13:32:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-01-06 13:32:16,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294421967] [2021-01-06 13:32:16,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 13:32:16,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 13:32:16,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345207986] [2021-01-06 13:32:16,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 13:32:16,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:16,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 13:32:16,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:16,106 INFO L87 Difference]: Start difference. First operand 699 states and 914 transitions. Second operand 3 states. [2021-01-06 13:32:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:16,821 INFO L93 Difference]: Finished difference Result 1535 states and 2010 transitions. [2021-01-06 13:32:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 13:32:16,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2021-01-06 13:32:16,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:16,829 INFO L225 Difference]: With dead ends: 1535 [2021-01-06 13:32:16,829 INFO L226 Difference]: Without dead ends: 977 [2021-01-06 13:32:16,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-01-06 13:32:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-01-06 13:32:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2021-01-06 13:32:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1162 transitions. [2021-01-06 13:32:16,860 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1162 transitions. Word has length 154 [2021-01-06 13:32:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:16,861 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 1162 transitions. [2021-01-06 13:32:16,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 13:32:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1162 transitions. [2021-01-06 13:32:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-01-06 13:32:16,866 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:16,867 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-01-06 13:32:16,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 13:32:16,867 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:16,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1743811801, now seen corresponding path program 1 times [2021-01-06 13:32:16,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:16,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531240051] [2021-01-06 13:32:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:16,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531240051] [2021-01-06 13:32:16,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 13:32:16,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 13:32:16,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637755949] [2021-01-06 13:32:16,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 13:32:16,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:17,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 13:32:17,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:17,000 INFO L87 Difference]: Start difference. First operand 977 states and 1162 transitions. Second operand 3 states. [2021-01-06 13:32:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:17,697 INFO L93 Difference]: Finished difference Result 2091 states and 2557 transitions. [2021-01-06 13:32:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 13:32:17,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-01-06 13:32:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:17,705 INFO L225 Difference]: With dead ends: 2091 [2021-01-06 13:32:17,705 INFO L226 Difference]: Without dead ends: 1255 [2021-01-06 13:32:17,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-01-06 13:32:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2021-01-06 13:32:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2021-01-06 13:32:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1461 transitions. [2021-01-06 13:32:17,739 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1461 transitions. Word has length 171 [2021-01-06 13:32:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:17,740 INFO L481 AbstractCegarLoop]: Abstraction has 1255 states and 1461 transitions. [2021-01-06 13:32:17,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 13:32:17,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1461 transitions. [2021-01-06 13:32:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-01-06 13:32:17,745 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:17,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-01-06 13:32:17,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 13:32:17,746 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:17,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1521646240, now seen corresponding path program 1 times [2021-01-06 13:32:17,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:17,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848174445] [2021-01-06 13:32:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:18,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848174445] [2021-01-06 13:32:18,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 13:32:18,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 13:32:18,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407065670] [2021-01-06 13:32:18,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 13:32:18,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:18,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 13:32:18,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 13:32:18,178 INFO L87 Difference]: Start difference. First operand 1255 states and 1461 transitions. Second operand 7 states. [2021-01-06 13:32:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:19,005 INFO L93 Difference]: Finished difference Result 2424 states and 2831 transitions. [2021-01-06 13:32:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 13:32:19,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2021-01-06 13:32:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:19,013 INFO L225 Difference]: With dead ends: 2424 [2021-01-06 13:32:19,013 INFO L226 Difference]: Without dead ends: 1255 [2021-01-06 13:32:19,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 13:32:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-01-06 13:32:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2021-01-06 13:32:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2021-01-06 13:32:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1456 transitions. [2021-01-06 13:32:19,053 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1456 transitions. Word has length 226 [2021-01-06 13:32:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:19,054 INFO L481 AbstractCegarLoop]: Abstraction has 1255 states and 1456 transitions. [2021-01-06 13:32:19,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 13:32:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1456 transitions. [2021-01-06 13:32:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-01-06 13:32:19,060 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:19,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-01-06 13:32:19,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 13:32:19,061 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:19,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:19,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1183329606, now seen corresponding path program 1 times [2021-01-06 13:32:19,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:19,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793612203] [2021-01-06 13:32:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 126 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:19,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793612203] [2021-01-06 13:32:19,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628094472] [2021-01-06 13:32:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 13:32:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:19,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 13:32:19,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 13:32:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 126 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:20,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 13:32:20,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-01-06 13:32:20,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152985046] [2021-01-06 13:32:20,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 13:32:20,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:20,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 13:32:20,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 13:32:20,010 INFO L87 Difference]: Start difference. First operand 1255 states and 1456 transitions. Second operand 5 states. [2021-01-06 13:32:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:21,611 INFO L93 Difference]: Finished difference Result 5010 states and 5924 transitions. [2021-01-06 13:32:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 13:32:21,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2021-01-06 13:32:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:21,632 INFO L225 Difference]: With dead ends: 5010 [2021-01-06 13:32:21,632 INFO L226 Difference]: Without dead ends: 3896 [2021-01-06 13:32:21,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 13:32:21,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-01-06 13:32:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 2228. [2021-01-06 13:32:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2021-01-06 13:32:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2553 transitions. [2021-01-06 13:32:21,707 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2553 transitions. Word has length 262 [2021-01-06 13:32:21,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:21,707 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 2553 transitions. [2021-01-06 13:32:21,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 13:32:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2553 transitions. [2021-01-06 13:32:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-01-06 13:32:21,713 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:21,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-01-06 13:32:21,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 13:32:21,928 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:21,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:21,929 INFO L82 PathProgramCache]: Analyzing trace with hash -511477952, now seen corresponding path program 1 times [2021-01-06 13:32:21,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:21,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885421845] [2021-01-06 13:32:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 13:32:22,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885421845] [2021-01-06 13:32:22,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 13:32:22,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 13:32:22,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701325375] [2021-01-06 13:32:22,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 13:32:22,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:22,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 13:32:22,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 13:32:22,176 INFO L87 Difference]: Start difference. First operand 2228 states and 2553 transitions. Second operand 4 states. [2021-01-06 13:32:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:23,099 INFO L93 Difference]: Finished difference Result 4593 states and 5289 transitions. [2021-01-06 13:32:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 13:32:23,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2021-01-06 13:32:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:23,112 INFO L225 Difference]: With dead ends: 4593 [2021-01-06 13:32:23,113 INFO L226 Difference]: Without dead ends: 2506 [2021-01-06 13:32:23,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 13:32:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-01-06 13:32:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2228. [2021-01-06 13:32:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2021-01-06 13:32:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2538 transitions. [2021-01-06 13:32:23,170 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2538 transitions. Word has length 267 [2021-01-06 13:32:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:23,171 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 2538 transitions. [2021-01-06 13:32:23,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 13:32:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2538 transitions. [2021-01-06 13:32:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-01-06 13:32:23,176 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:23,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-01-06 13:32:23,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 13:32:23,177 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:23,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1968255870, now seen corresponding path program 1 times [2021-01-06 13:32:23,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:23,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971288423] [2021-01-06 13:32:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-01-06 13:32:23,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971288423] [2021-01-06 13:32:23,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 13:32:23,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 13:32:23,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240566755] [2021-01-06 13:32:23,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 13:32:23,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 13:32:23,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 13:32:23,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:23,351 INFO L87 Difference]: Start difference. First operand 2228 states and 2538 transitions. Second operand 3 states. [2021-01-06 13:32:24,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 13:32:24,025 INFO L93 Difference]: Finished difference Result 4871 states and 5660 transitions. [2021-01-06 13:32:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 13:32:24,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2021-01-06 13:32:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 13:32:24,039 INFO L225 Difference]: With dead ends: 4871 [2021-01-06 13:32:24,039 INFO L226 Difference]: Without dead ends: 2784 [2021-01-06 13:32:24,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 13:32:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2021-01-06 13:32:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2645. [2021-01-06 13:32:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2645 states. [2021-01-06 13:32:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 2995 transitions. [2021-01-06 13:32:24,106 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 2995 transitions. Word has length 267 [2021-01-06 13:32:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 13:32:24,107 INFO L481 AbstractCegarLoop]: Abstraction has 2645 states and 2995 transitions. [2021-01-06 13:32:24,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 13:32:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 2995 transitions. [2021-01-06 13:32:24,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-01-06 13:32:24,113 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 13:32:24,114 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-01-06 13:32:24,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 13:32:24,114 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 13:32:24,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 13:32:24,115 INFO L82 PathProgramCache]: Analyzing trace with hash 377334884, now seen corresponding path program 1 times [2021-01-06 13:32:24,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 13:32:24,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790250684] [2021-01-06 13:32:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 13:32:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 170 proven. 17 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-01-06 13:32:24,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790250684] [2021-01-06 13:32:24,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224647776] [2021-01-06 13:32:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 13:32:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 13:32:24,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2021-01-06 13:32:24,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 13:32:24,789 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 13:32:24,793 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 13:32:24,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 13:32:24,956 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:25,162 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:25,467 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:25,637 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:25,903 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:26,235 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:26,552 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:27,193 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:27,886 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:28,608 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:29,382 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:30,244 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:31,181 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:32,316 INFO L757 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:33,679 INFO L757 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:34,881 INFO L757 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:36,250 INFO L757 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:37,714 INFO L757 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:38,895 INFO L757 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:40,171 INFO L757 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:41,458 INFO L757 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:43,223 INFO L757 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:45,345 INFO L757 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:47,839 INFO L757 QuantifierPusher]: Run 240 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:50,699 INFO L757 QuantifierPusher]: Run 250 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:54,729 INFO L757 QuantifierPusher]: Run 260 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:32:59,486 INFO L757 QuantifierPusher]: Run 270 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:33:04,869 INFO L757 QuantifierPusher]: Run 280 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:33:11,423 INFO L757 QuantifierPusher]: Run 290 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:33:18,773 INFO L757 QuantifierPusher]: Run 300 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:33:26,738 INFO L757 QuantifierPusher]: Run 310 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:33:35,320 INFO L757 QuantifierPusher]: Run 320 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:33:44,616 INFO L757 QuantifierPusher]: Run 330 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:33:53,116 INFO L757 QuantifierPusher]: Run 340 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:34:02,751 INFO L757 QuantifierPusher]: Run 350 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:34:13,047 INFO L757 QuantifierPusher]: Run 360 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:34:22,187 INFO L757 QuantifierPusher]: Run 370 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:34:32,048 INFO L757 QuantifierPusher]: Run 380 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:34:42,628 INFO L757 QuantifierPusher]: Run 390 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:34:54,158 INFO L757 QuantifierPusher]: Run 400 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:35:06,686 INFO L757 QuantifierPusher]: Run 410 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:35:19,953 INFO L757 QuantifierPusher]: Run 420 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:35:30,040 INFO L757 QuantifierPusher]: Run 430 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:35:41,324 INFO L757 QuantifierPusher]: Run 440 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:35:53,899 INFO L757 QuantifierPusher]: Run 450 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:36:09,968 INFO L757 QuantifierPusher]: Run 460 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 13:36:24,093 INFO L757 QuantifierPusher]: Run 470 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug.