./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d5cb8d9caea7ccafc5dde86756b709e1bbbadc4ec66724ae09094031008d598 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:59:45,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:59:45,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:59:45,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:59:45,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:59:45,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:59:45,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:59:45,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:59:45,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:59:45,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:59:45,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:59:45,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:59:45,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:59:45,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:59:45,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:59:45,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:59:45,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:59:45,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:59:45,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:59:45,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:59:45,703 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:59:45,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:59:45,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:59:45,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:59:45,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:59:45,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:59:45,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:59:45,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:59:45,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:59:45,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:59:45,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:59:45,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:59:45,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:59:45,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:59:45,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:59:45,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:59:45,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:59:45,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:59:45,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:59:45,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:59:45,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:59:45,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:59:45,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:59:45,759 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:59:45,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:59:45,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:59:45,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:59:45,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:59:45,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:59:45,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:59:45,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:59:45,763 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:59:45,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:59:45,764 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:59:45,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:59:45,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:59:45,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:59:45,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:59:45,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:59:45,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:59:45,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:59:45,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:59:45,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:59:45,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:59:45,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:59:45,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:59:45,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:59:45,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:59:45,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:59:45,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:59:45,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:59:45,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:59:45,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:59:45,768 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:59:45,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:59:45,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:59:45,768 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d5cb8d9caea7ccafc5dde86756b709e1bbbadc4ec66724ae09094031008d598 [2022-07-21 05:59:46,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:59:46,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:59:46,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:59:46,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:59:46,045 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:59:46,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-07-21 05:59:46,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3995ff38b/e92c7f02d89446c6b55712b4ad7ada28/FLAG8b4089e4e [2022-07-21 05:59:46,496 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:59:46,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-07-21 05:59:46,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3995ff38b/e92c7f02d89446c6b55712b4ad7ada28/FLAG8b4089e4e [2022-07-21 05:59:46,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3995ff38b/e92c7f02d89446c6b55712b4ad7ada28 [2022-07-21 05:59:46,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:59:46,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:59:46,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:59:46,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:59:46,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:59:46,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:59:46" (1/1) ... [2022-07-21 05:59:46,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd6b16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:46, skipping insertion in model container [2022-07-21 05:59:46,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:59:46" (1/1) ... [2022-07-21 05:59:46,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:59:46,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:59:47,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-07-21 05:59:47,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:59:47,192 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:59:47,243 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-07-21 05:59:47,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:59:47,294 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:59:47,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47 WrapperNode [2022-07-21 05:59:47,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:59:47,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:59:47,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:59:47,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:59:47,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,362 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 827 [2022-07-21 05:59:47,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:59:47,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:59:47,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:59:47,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:59:47,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:59:47,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:59:47,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:59:47,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:59:47,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (1/1) ... [2022-07-21 05:59:47,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:59:47,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:59:47,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:59:47,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:59:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:59:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:59:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:59:47,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:59:47,558 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:59:47,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:59:48,055 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:59:48,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:59:48,064 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:59:48,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:59:48 BoogieIcfgContainer [2022-07-21 05:59:48,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:59:48,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:59:48,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:59:48,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:59:48,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:59:46" (1/3) ... [2022-07-21 05:59:48,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3276dc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:59:48, skipping insertion in model container [2022-07-21 05:59:48,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:59:47" (2/3) ... [2022-07-21 05:59:48,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3276dc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:59:48, skipping insertion in model container [2022-07-21 05:59:48,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:59:48" (3/3) ... [2022-07-21 05:59:48,072 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-07-21 05:59:48,081 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:59:48,081 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:59:48,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:59:48,136 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b81431, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b6fa478 [2022-07-21 05:59:48,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:59:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 05:59:48,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:48,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:48,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1369000833, now seen corresponding path program 1 times [2022-07-21 05:59:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:48,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736586509] [2022-07-21 05:59:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:48,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:48,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736586509] [2022-07-21 05:59:48,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736586509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:48,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:48,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:59:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779476070] [2022-07-21 05:59:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:59:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:59:48,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:59:48,443 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:48,549 INFO L93 Difference]: Finished difference Result 403 states and 654 transitions. [2022-07-21 05:59:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:59:48,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-21 05:59:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:48,564 INFO L225 Difference]: With dead ends: 403 [2022-07-21 05:59:48,564 INFO L226 Difference]: Without dead ends: 212 [2022-07-21 05:59:48,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:59:48,570 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 102 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:48,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 921 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:59:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-21 05:59:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-07-21 05:59:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.5023696682464456) internal successors, (317), 211 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 317 transitions. [2022-07-21 05:59:48,613 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 317 transitions. Word has length 79 [2022-07-21 05:59:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:48,614 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 317 transitions. [2022-07-21 05:59:48,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 317 transitions. [2022-07-21 05:59:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 05:59:48,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:48,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:48,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:59:48,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1406572509, now seen corresponding path program 1 times [2022-07-21 05:59:48,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:48,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384324636] [2022-07-21 05:59:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:48,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:48,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384324636] [2022-07-21 05:59:48,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384324636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:48,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:48,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:59:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936423044] [2022-07-21 05:59:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:59:48,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:59:48,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:59:48,774 INFO L87 Difference]: Start difference. First operand 212 states and 317 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:48,815 INFO L93 Difference]: Finished difference Result 480 states and 743 transitions. [2022-07-21 05:59:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:59:48,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-21 05:59:48,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:48,818 INFO L225 Difference]: With dead ends: 480 [2022-07-21 05:59:48,818 INFO L226 Difference]: Without dead ends: 309 [2022-07-21 05:59:48,823 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:59:48,824 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 175 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:48,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 559 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:59:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-21 05:59:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2022-07-21 05:59:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.526143790849673) internal successors, (467), 306 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 467 transitions. [2022-07-21 05:59:48,840 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 467 transitions. Word has length 109 [2022-07-21 05:59:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:48,841 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 467 transitions. [2022-07-21 05:59:48,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 467 transitions. [2022-07-21 05:59:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 05:59:48,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:48,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:59:48,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1105344852, now seen corresponding path program 1 times [2022-07-21 05:59:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:48,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935721128] [2022-07-21 05:59:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:48,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:48,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:48,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935721128] [2022-07-21 05:59:48,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935721128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:48,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:48,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:59:48,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558311719] [2022-07-21 05:59:48,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:48,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:59:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:48,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:59:48,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:59:48,947 INFO L87 Difference]: Start difference. First operand 307 states and 467 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:48,972 INFO L93 Difference]: Finished difference Result 735 states and 1148 transitions. [2022-07-21 05:59:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:59:48,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-21 05:59:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:48,974 INFO L225 Difference]: With dead ends: 735 [2022-07-21 05:59:48,974 INFO L226 Difference]: Without dead ends: 475 [2022-07-21 05:59:48,975 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:59:48,975 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 162 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:48,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 602 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:59:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-07-21 05:59:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2022-07-21 05:59:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5444915254237288) internal successors, (729), 472 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 729 transitions. [2022-07-21 05:59:48,994 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 729 transitions. Word has length 111 [2022-07-21 05:59:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:48,994 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 729 transitions. [2022-07-21 05:59:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 729 transitions. [2022-07-21 05:59:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 05:59:48,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:48,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:48,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:59:48,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:48,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:48,996 INFO L85 PathProgramCache]: Analyzing trace with hash 287285005, now seen corresponding path program 1 times [2022-07-21 05:59:48,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:48,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719592447] [2022-07-21 05:59:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:48,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:49,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:49,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719592447] [2022-07-21 05:59:49,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719592447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:49,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:49,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:59:49,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483831359] [2022-07-21 05:59:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:59:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:59:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:59:49,050 INFO L87 Difference]: Start difference. First operand 473 states and 729 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:49,086 INFO L93 Difference]: Finished difference Result 1175 states and 1844 transitions. [2022-07-21 05:59:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:59:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-07-21 05:59:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:49,089 INFO L225 Difference]: With dead ends: 1175 [2022-07-21 05:59:49,089 INFO L226 Difference]: Without dead ends: 755 [2022-07-21 05:59:49,090 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:59:49,090 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 149 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:49,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 519 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:59:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-07-21 05:59:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 753. [2022-07-21 05:59:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.5545212765957446) internal successors, (1169), 752 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1169 transitions. [2022-07-21 05:59:49,130 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1169 transitions. Word has length 113 [2022-07-21 05:59:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:49,131 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1169 transitions. [2022-07-21 05:59:49,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1169 transitions. [2022-07-21 05:59:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:59:49,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:49,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:49,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:59:49,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash 155565224, now seen corresponding path program 1 times [2022-07-21 05:59:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:49,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586780227] [2022-07-21 05:59:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:49,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:49,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586780227] [2022-07-21 05:59:49,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586780227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:49,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:49,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:59:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867635330] [2022-07-21 05:59:49,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:49,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:59:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:59:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:59:49,174 INFO L87 Difference]: Start difference. First operand 753 states and 1169 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:49,222 INFO L93 Difference]: Finished difference Result 1901 states and 2984 transitions. [2022-07-21 05:59:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:59:49,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-07-21 05:59:49,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:49,243 INFO L225 Difference]: With dead ends: 1901 [2022-07-21 05:59:49,243 INFO L226 Difference]: Without dead ends: 1207 [2022-07-21 05:59:49,244 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:59:49,244 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 136 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:49,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 530 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:59:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-07-21 05:59:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1205. [2022-07-21 05:59:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1204 states have (on average 1.5556478405315615) internal successors, (1873), 1204 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1873 transitions. [2022-07-21 05:59:49,289 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1873 transitions. Word has length 115 [2022-07-21 05:59:49,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:49,289 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1873 transitions. [2022-07-21 05:59:49,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1873 transitions. [2022-07-21 05:59:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 05:59:49,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:49,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:49,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:59:49,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2047962190, now seen corresponding path program 1 times [2022-07-21 05:59:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:49,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916177128] [2022-07-21 05:59:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:49,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:49,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916177128] [2022-07-21 05:59:49,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916177128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:49,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:49,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:59:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338367732] [2022-07-21 05:59:49,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:49,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:59:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:59:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:59:49,328 INFO L87 Difference]: Start difference. First operand 1205 states and 1873 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:49,407 INFO L93 Difference]: Finished difference Result 3031 states and 4736 transitions. [2022-07-21 05:59:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:59:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-21 05:59:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:49,413 INFO L225 Difference]: With dead ends: 3031 [2022-07-21 05:59:49,413 INFO L226 Difference]: Without dead ends: 1891 [2022-07-21 05:59:49,414 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:59:49,415 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 123 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:49,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 479 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:59:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-07-21 05:59:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1889. [2022-07-21 05:59:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.5471398305084745) internal successors, (2921), 1888 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2921 transitions. [2022-07-21 05:59:49,496 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2921 transitions. Word has length 117 [2022-07-21 05:59:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:49,496 INFO L495 AbstractCegarLoop]: Abstraction has 1889 states and 2921 transitions. [2022-07-21 05:59:49,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2921 transitions. [2022-07-21 05:59:49,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 05:59:49,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:49,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:59:49,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1115406563, now seen corresponding path program 1 times [2022-07-21 05:59:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:49,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882310295] [2022-07-21 05:59:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:49,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:49,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882310295] [2022-07-21 05:59:49,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882310295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:49,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:49,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:59:49,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131602141] [2022-07-21 05:59:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:49,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:59:49,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:49,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:59:49,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:59:49,592 INFO L87 Difference]: Start difference. First operand 1889 states and 2921 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:50,470 INFO L93 Difference]: Finished difference Result 16374 states and 25284 transitions. [2022-07-21 05:59:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:59:50,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-07-21 05:59:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:50,519 INFO L225 Difference]: With dead ends: 16374 [2022-07-21 05:59:50,520 INFO L226 Difference]: Without dead ends: 14556 [2022-07-21 05:59:50,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:59:50,530 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 2403 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:50,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 1884 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:59:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14556 states. [2022-07-21 05:59:50,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14556 to 3650. [2022-07-21 05:59:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 1.5168539325842696) internal successors, (5535), 3649 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5535 transitions. [2022-07-21 05:59:50,916 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5535 transitions. Word has length 119 [2022-07-21 05:59:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:50,917 INFO L495 AbstractCegarLoop]: Abstraction has 3650 states and 5535 transitions. [2022-07-21 05:59:50,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5535 transitions. [2022-07-21 05:59:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 05:59:50,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:50,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:50,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:59:50,924 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:50,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash 551400311, now seen corresponding path program 1 times [2022-07-21 05:59:50,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:50,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099766363] [2022-07-21 05:59:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:50,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099766363] [2022-07-21 05:59:50,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099766363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:50,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:50,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:59:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035172274] [2022-07-21 05:59:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:50,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:59:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:59:50,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:59:50,984 INFO L87 Difference]: Start difference. First operand 3650 states and 5535 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:51,291 INFO L93 Difference]: Finished difference Result 8386 states and 12721 transitions. [2022-07-21 05:59:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:59:51,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-07-21 05:59:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:51,333 INFO L225 Difference]: With dead ends: 8386 [2022-07-21 05:59:51,333 INFO L226 Difference]: Without dead ends: 4805 [2022-07-21 05:59:51,336 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:59:51,336 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 186 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:51,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 592 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:59:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2022-07-21 05:59:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4803. [2022-07-21 05:59:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 4802 states have (on average 1.4929196168263223) internal successors, (7169), 4802 states have internal predecessors, (7169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 7169 transitions. [2022-07-21 05:59:51,615 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 7169 transitions. Word has length 123 [2022-07-21 05:59:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:51,616 INFO L495 AbstractCegarLoop]: Abstraction has 4803 states and 7169 transitions. [2022-07-21 05:59:51,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 7169 transitions. [2022-07-21 05:59:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 05:59:51,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:51,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:51,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:59:51,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash 176931542, now seen corresponding path program 1 times [2022-07-21 05:59:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:51,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40462724] [2022-07-21 05:59:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:51,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:51,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:51,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40462724] [2022-07-21 05:59:51,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40462724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:51,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:51,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:59:51,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612667395] [2022-07-21 05:59:51,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:51,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:59:51,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:51,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:59:51,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:59:51,749 INFO L87 Difference]: Start difference. First operand 4803 states and 7169 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:52,259 INFO L93 Difference]: Finished difference Result 9538 states and 14258 transitions. [2022-07-21 05:59:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:59:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-07-21 05:59:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:52,280 INFO L225 Difference]: With dead ends: 9538 [2022-07-21 05:59:52,280 INFO L226 Difference]: Without dead ends: 4805 [2022-07-21 05:59:52,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:59:52,288 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1151 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:52,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 995 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:59:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2022-07-21 05:59:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4803. [2022-07-21 05:59:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 4802 states have (on average 1.4760516451478551) internal successors, (7088), 4802 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 7088 transitions. [2022-07-21 05:59:52,653 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 7088 transitions. Word has length 123 [2022-07-21 05:59:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:52,653 INFO L495 AbstractCegarLoop]: Abstraction has 4803 states and 7088 transitions. [2022-07-21 05:59:52,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 7088 transitions. [2022-07-21 05:59:52,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 05:59:52,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:52,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:52,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:59:52,661 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash -382371942, now seen corresponding path program 1 times [2022-07-21 05:59:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:52,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169412107] [2022-07-21 05:59:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:52,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:52,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:52,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169412107] [2022-07-21 05:59:52,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169412107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:52,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:52,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:59:52,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976563289] [2022-07-21 05:59:52,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:52,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:59:52,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:52,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:59:52,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:59:52,729 INFO L87 Difference]: Start difference. First operand 4803 states and 7088 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:54,081 INFO L93 Difference]: Finished difference Result 24885 states and 36792 transitions. [2022-07-21 05:59:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:59:54,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-07-21 05:59:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:54,117 INFO L225 Difference]: With dead ends: 24885 [2022-07-21 05:59:54,117 INFO L226 Difference]: Without dead ends: 21155 [2022-07-21 05:59:54,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:59:54,129 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1574 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:54,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1550 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:59:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21155 states. [2022-07-21 05:59:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21155 to 8726. [2022-07-21 05:59:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8726 states, 8725 states have (on average 1.468080229226361) internal successors, (12809), 8725 states have internal predecessors, (12809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 12809 transitions. [2022-07-21 05:59:54,871 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 12809 transitions. Word has length 124 [2022-07-21 05:59:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:54,871 INFO L495 AbstractCegarLoop]: Abstraction has 8726 states and 12809 transitions. [2022-07-21 05:59:54,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 12809 transitions. [2022-07-21 05:59:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 05:59:54,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:54,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:54,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:59:54,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:54,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:54,883 INFO L85 PathProgramCache]: Analyzing trace with hash -354034678, now seen corresponding path program 1 times [2022-07-21 05:59:54,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:54,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381670671] [2022-07-21 05:59:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:54,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:54,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381670671] [2022-07-21 05:59:54,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381670671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:54,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:54,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:59:54,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971583375] [2022-07-21 05:59:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:54,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:59:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:54,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:59:54,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:59:54,977 INFO L87 Difference]: Start difference. First operand 8726 states and 12809 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:59:56,579 INFO L93 Difference]: Finished difference Result 28673 states and 42340 transitions. [2022-07-21 05:59:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:59:56,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-07-21 05:59:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:59:56,618 INFO L225 Difference]: With dead ends: 28673 [2022-07-21 05:59:56,618 INFO L226 Difference]: Without dead ends: 24943 [2022-07-21 05:59:56,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:59:56,629 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1431 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:59:56,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1757 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:59:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24943 states. [2022-07-21 05:59:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24943 to 14571. [2022-07-21 05:59:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14571 states, 14570 states have (on average 1.4636925188743994) internal successors, (21326), 14570 states have internal predecessors, (21326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14571 states to 14571 states and 21326 transitions. [2022-07-21 05:59:57,888 INFO L78 Accepts]: Start accepts. Automaton has 14571 states and 21326 transitions. Word has length 124 [2022-07-21 05:59:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:59:57,889 INFO L495 AbstractCegarLoop]: Abstraction has 14571 states and 21326 transitions. [2022-07-21 05:59:57,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:59:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 14571 states and 21326 transitions. [2022-07-21 05:59:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 05:59:57,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:59:57,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:59:57,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:59:57,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:59:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:59:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1968161173, now seen corresponding path program 1 times [2022-07-21 05:59:57,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:59:57,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873790581] [2022-07-21 05:59:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:59:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:59:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:59:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:59:57,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:59:57,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873790581] [2022-07-21 05:59:57,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873790581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:59:57,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:59:57,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:59:57,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125408691] [2022-07-21 05:59:57,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:59:57,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:59:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:59:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:59:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:59:57,980 INFO L87 Difference]: Start difference. First operand 14571 states and 21326 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:00:00,122 INFO L93 Difference]: Finished difference Result 32543 states and 48010 transitions. [2022-07-21 06:00:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 06:00:00,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-07-21 06:00:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:00:00,166 INFO L225 Difference]: With dead ends: 32543 [2022-07-21 06:00:00,166 INFO L226 Difference]: Without dead ends: 28813 [2022-07-21 06:00:00,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:00:00,179 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1495 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:00:00,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1769 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:00:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28813 states. [2022-07-21 06:00:01,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28813 to 18531. [2022-07-21 06:00:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18531 states, 18530 states have (on average 1.4644360496492175) internal successors, (27136), 18530 states have internal predecessors, (27136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18531 states to 18531 states and 27136 transitions. [2022-07-21 06:00:01,738 INFO L78 Accepts]: Start accepts. Automaton has 18531 states and 27136 transitions. Word has length 124 [2022-07-21 06:00:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:00:01,740 INFO L495 AbstractCegarLoop]: Abstraction has 18531 states and 27136 transitions. [2022-07-21 06:00:01,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18531 states and 27136 transitions. [2022-07-21 06:00:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 06:00:01,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:00:01,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:00:01,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 06:00:01,766 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:00:01,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:00:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1282449422, now seen corresponding path program 1 times [2022-07-21 06:00:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:00:01,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204734540] [2022-07-21 06:00:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:00:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:00:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:00:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:00:01,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:00:01,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204734540] [2022-07-21 06:00:01,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204734540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:00:01,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:00:01,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:00:01,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116650406] [2022-07-21 06:00:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:00:01,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:00:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:00:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:00:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:00:01,840 INFO L87 Difference]: Start difference. First operand 18531 states and 27136 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:05,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:00:05,043 INFO L93 Difference]: Finished difference Result 36472 states and 53771 transitions. [2022-07-21 06:00:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 06:00:05,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-07-21 06:00:05,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:00:05,094 INFO L225 Difference]: With dead ends: 36472 [2022-07-21 06:00:05,095 INFO L226 Difference]: Without dead ends: 32742 [2022-07-21 06:00:05,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:00:05,107 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1718 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:00:05,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 1775 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:00:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32742 states. [2022-07-21 06:00:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32742 to 22500. [2022-07-21 06:00:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22500 states, 22499 states have (on average 1.4649984443753055) internal successors, (32961), 22499 states have internal predecessors, (32961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22500 states to 22500 states and 32961 transitions. [2022-07-21 06:00:07,435 INFO L78 Accepts]: Start accepts. Automaton has 22500 states and 32961 transitions. Word has length 124 [2022-07-21 06:00:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:00:07,436 INFO L495 AbstractCegarLoop]: Abstraction has 22500 states and 32961 transitions. [2022-07-21 06:00:07,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 22500 states and 32961 transitions. [2022-07-21 06:00:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 06:00:07,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:00:07,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:00:07,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 06:00:07,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:00:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:00:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1765417965, now seen corresponding path program 1 times [2022-07-21 06:00:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:00:07,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980611737] [2022-07-21 06:00:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:00:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:00:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:00:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:00:07,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:00:07,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980611737] [2022-07-21 06:00:07,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980611737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:00:07,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:00:07,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:00:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742938757] [2022-07-21 06:00:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:00:07,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:00:07,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:00:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:00:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:00:07,654 INFO L87 Difference]: Start difference. First operand 22500 states and 32961 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:11,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:00:11,124 INFO L93 Difference]: Finished difference Result 38062 states and 56157 transitions. [2022-07-21 06:00:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 06:00:11,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-07-21 06:00:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:00:11,192 INFO L225 Difference]: With dead ends: 38062 [2022-07-21 06:00:11,192 INFO L226 Difference]: Without dead ends: 35532 [2022-07-21 06:00:11,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:00:11,243 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1742 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:00:11,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 1288 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:00:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35532 states. [2022-07-21 06:00:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35532 to 25290. [2022-07-21 06:00:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25290 states, 25289 states have (on average 1.4673178061607814) internal successors, (37107), 25289 states have internal predecessors, (37107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25290 states to 25290 states and 37107 transitions. [2022-07-21 06:00:15,026 INFO L78 Accepts]: Start accepts. Automaton has 25290 states and 37107 transitions. Word has length 124 [2022-07-21 06:00:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:00:15,026 INFO L495 AbstractCegarLoop]: Abstraction has 25290 states and 37107 transitions. [2022-07-21 06:00:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 25290 states and 37107 transitions. [2022-07-21 06:00:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 06:00:15,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:00:15,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:00:15,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 06:00:15,056 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:00:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:00:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1430653822, now seen corresponding path program 1 times [2022-07-21 06:00:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:00:15,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403375676] [2022-07-21 06:00:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:00:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:00:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:00:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:00:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:00:15,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403375676] [2022-07-21 06:00:15,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403375676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:00:15,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:00:15,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:00:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501563] [2022-07-21 06:00:15,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:00:15,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:00:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:00:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:00:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:00:15,103 INFO L87 Difference]: Start difference. First operand 25290 states and 37107 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:00:20,156 INFO L93 Difference]: Finished difference Result 74047 states and 108590 transitions. [2022-07-21 06:00:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:00:20,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-07-21 06:00:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:00:20,264 INFO L225 Difference]: With dead ends: 74047 [2022-07-21 06:00:20,265 INFO L226 Difference]: Without dead ends: 50236 [2022-07-21 06:00:20,308 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:00:20,309 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 153 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:00:20,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 336 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:00:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50236 states. [2022-07-21 06:00:26,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50236 to 50234. [2022-07-21 06:00:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50234 states, 50233 states have (on average 1.4585431887404694) internal successors, (73267), 50233 states have internal predecessors, (73267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50234 states to 50234 states and 73267 transitions. [2022-07-21 06:00:26,881 INFO L78 Accepts]: Start accepts. Automaton has 50234 states and 73267 transitions. Word has length 126 [2022-07-21 06:00:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:00:26,881 INFO L495 AbstractCegarLoop]: Abstraction has 50234 states and 73267 transitions. [2022-07-21 06:00:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:00:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 50234 states and 73267 transitions. [2022-07-21 06:00:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 06:00:26,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:00:26,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:00:26,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 06:00:26,976 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:00:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:00:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1754976601, now seen corresponding path program 1 times [2022-07-21 06:00:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:00:26,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979861078] [2022-07-21 06:00:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:00:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:00:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:00:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:00:27,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:00:27,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979861078] [2022-07-21 06:00:27,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979861078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:00:27,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:00:27,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:00:27,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367078248] [2022-07-21 06:00:27,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:00:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:00:27,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:00:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:00:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:00:27,041 INFO L87 Difference]: Start difference. First operand 50234 states and 73267 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)