./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label32.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/eca-rers2012/Problem12_label32.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 d6a56bada7206875b5522c4732ed558727da026e7bf600ff2a0cdce747605d25 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:03:54,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:03:54,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:03:54,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:03:54,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:03:54,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:03:54,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:03:54,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:03:54,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:03:54,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:03:54,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:03:54,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:03:54,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:03:54,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:03:54,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:03:54,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:03:54,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:03:54,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:03:54,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:03:54,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:03:54,430 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:03:54,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:03:54,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:03:54,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:03:54,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:03:54,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:03:54,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:03:54,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:03:54,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:03:54,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:03:54,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:03:54,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:03:54,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:03:54,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:03:54,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:03:54,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:03:54,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:03:54,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:03:54,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:03:54,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:03:54,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:03:54,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:03:54,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:03:54,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:03:54,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:03:54,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:03:54,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:03:54,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:03:54,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:03:54,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:03:54,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:03:54,474 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:03:54,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:03:54,475 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:03:54,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:03:54,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:03:54,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:03:54,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:03:54,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:03:54,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:03:54,476 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:03:54,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:03:54,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:03:54,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:03:54,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:03:54,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:03:54,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:03:54,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:03:54,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:03:54,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:03:54,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:03:54,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:03:54,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:03:54,479 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:03:54,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:03:54,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:03:54,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a56bada7206875b5522c4732ed558727da026e7bf600ff2a0cdce747605d25 [2022-07-12 01:03:54,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:03:54,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:03:54,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:03:54,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:03:54,719 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:03:54,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label32.c [2022-07-12 01:03:54,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3087f66e8/bc2ef0522da3457d8929282bfa6c9de9/FLAG0ff88eaf2 [2022-07-12 01:03:55,266 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:03:55,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label32.c [2022-07-12 01:03:55,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3087f66e8/bc2ef0522da3457d8929282bfa6c9de9/FLAG0ff88eaf2 [2022-07-12 01:03:55,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3087f66e8/bc2ef0522da3457d8929282bfa6c9de9 [2022-07-12 01:03:55,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:03:55,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:03:55,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:03:55,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:03:55,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:03:55,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:03:55" (1/1) ... [2022-07-12 01:03:55,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65545cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:55, skipping insertion in model container [2022-07-12 01:03:55,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:03:55" (1/1) ... [2022-07-12 01:03:55,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:03:55,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:03:55,914 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/eca-rers2012/Problem12_label32.c[5470,5483] [2022-07-12 01:03:56,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:03:56,433 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:03:56,456 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/eca-rers2012/Problem12_label32.c[5470,5483] [2022-07-12 01:03:56,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:03:56,738 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:03:56,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56 WrapperNode [2022-07-12 01:03:56,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:03:56,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:03:56,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:03:56,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:03:56,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:56,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,044 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-12 01:03:57,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:03:57,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:03:57,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:03:57,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:03:57,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:03:57,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:03:57,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:03:57,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:03:57,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (1/1) ... [2022-07-12 01:03:57,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:03:57,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:03:57,398 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) [2022-07-12 01:03:57,416 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 [2022-07-12 01:03:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:03:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:03:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:03:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:03:57,491 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:03:57,492 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:04:00,090 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:04:00,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:04:00,099 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:04:00,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:04:00 BoogieIcfgContainer [2022-07-12 01:04:00,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:04:00,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:04:00,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:04:00,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:04:00,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:03:55" (1/3) ... [2022-07-12 01:04:00,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398ee4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:04:00, skipping insertion in model container [2022-07-12 01:04:00,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:03:56" (2/3) ... [2022-07-12 01:04:00,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398ee4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:04:00, skipping insertion in model container [2022-07-12 01:04:00,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:04:00" (3/3) ... [2022-07-12 01:04:00,107 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label32.c [2022-07-12 01:04:00,115 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:04:00,116 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:04:00,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:04:00,158 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@7c8ca8fe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c0476ea [2022-07-12 01:04:00,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:04:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2022-07-12 01:04:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 01:04:00,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:00,169 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] [2022-07-12 01:04:00,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash 712930081, now seen corresponding path program 1 times [2022-07-12 01:04:00,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:00,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903731983] [2022-07-12 01:04:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:00,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:00,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:00,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903731983] [2022-07-12 01:04:00,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903731983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:00,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:00,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:04:00,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927233217] [2022-07-12 01:04:00,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:00,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:00,425 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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) [2022-07-12 01:04:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:03,467 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-12 01:04:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:03,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2022-07-12 01:04:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:03,486 INFO L225 Difference]: With dead ends: 2388 [2022-07-12 01:04:03,486 INFO L226 Difference]: Without dead ends: 1506 [2022-07-12 01:04:03,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:03,492 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 793 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:03,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 112 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 01:04:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-12 01:04:03,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-12 01:04:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.86578073089701) internal successors, (2808), 1505 states have internal predecessors, (2808), 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) [2022-07-12 01:04:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2808 transitions. [2022-07-12 01:04:03,565 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2808 transitions. Word has length 43 [2022-07-12 01:04:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:03,565 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2808 transitions. [2022-07-12 01:04:03,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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) [2022-07-12 01:04:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2808 transitions. [2022-07-12 01:04:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 01:04:03,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:03,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:03,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:04:03,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:03,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1973974140, now seen corresponding path program 1 times [2022-07-12 01:04:03,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:03,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879711890] [2022-07-12 01:04:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:03,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:03,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:03,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879711890] [2022-07-12 01:04:03,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879711890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:03,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:03,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494015121] [2022-07-12 01:04:03,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:03,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:04:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:04:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:03,664 INFO L87 Difference]: Start difference. First operand 1506 states and 2808 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 01:04:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:07,664 INFO L93 Difference]: Finished difference Result 5271 states and 9796 transitions. [2022-07-12 01:04:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 01:04:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-07-12 01:04:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:07,677 INFO L225 Difference]: With dead ends: 5271 [2022-07-12 01:04:07,677 INFO L226 Difference]: Without dead ends: 3767 [2022-07-12 01:04:07,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:04:07,683 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 2307 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:07,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 197 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1534 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 01:04:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2022-07-12 01:04:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3759. [2022-07-12 01:04:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.6056412985630655) internal successors, (6034), 3758 states have internal predecessors, (6034), 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) [2022-07-12 01:04:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 6034 transitions. [2022-07-12 01:04:07,742 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 6034 transitions. Word has length 108 [2022-07-12 01:04:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:07,742 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 6034 transitions. [2022-07-12 01:04:07,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 01:04:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 6034 transitions. [2022-07-12 01:04:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 01:04:07,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:07,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:07,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:04:07,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1709599411, now seen corresponding path program 1 times [2022-07-12 01:04:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:07,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535866209] [2022-07-12 01:04:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:07,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:08,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:08,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535866209] [2022-07-12 01:04:08,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535866209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:08,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:08,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:08,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200927022] [2022-07-12 01:04:08,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:08,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:04:08,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:04:08,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:08,040 INFO L87 Difference]: Start difference. First operand 3759 states and 6034 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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) [2022-07-12 01:04:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:11,248 INFO L93 Difference]: Finished difference Result 10557 states and 17377 transitions. [2022-07-12 01:04:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:04:11,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2022-07-12 01:04:11,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:11,268 INFO L225 Difference]: With dead ends: 10557 [2022-07-12 01:04:11,269 INFO L226 Difference]: Without dead ends: 6763 [2022-07-12 01:04:11,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:11,281 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3804 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:11,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 712 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3804 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 01:04:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-07-12 01:04:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-07-12 01:04:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3571428571428572) internal successors, (9177), 6762 states have internal predecessors, (9177), 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) [2022-07-12 01:04:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9177 transitions. [2022-07-12 01:04:11,439 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9177 transitions. Word has length 114 [2022-07-12 01:04:11,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:11,440 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9177 transitions. [2022-07-12 01:04:11,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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) [2022-07-12 01:04:11,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9177 transitions. [2022-07-12 01:04:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 01:04:11,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:11,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:11,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:04:11,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash 37444428, now seen corresponding path program 1 times [2022-07-12 01:04:11,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:11,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179689488] [2022-07-12 01:04:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:04:11,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:11,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179689488] [2022-07-12 01:04:11,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179689488] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:04:11,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333257560] [2022-07-12 01:04:11,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:04:11,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:04:11,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:04:11,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:04:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:11,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:04:11,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:04:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 01:04:11,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:04:11,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333257560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:11,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:04:11,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-12 01:04:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069857532] [2022-07-12 01:04:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:11,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:04:11,924 INFO L87 Difference]: Start difference. First operand 6763 states and 9177 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2022-07-12 01:04:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:13,884 INFO L93 Difference]: Finished difference Result 18030 states and 25115 transitions. [2022-07-12 01:04:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:13,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 188 [2022-07-12 01:04:13,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:13,917 INFO L225 Difference]: With dead ends: 18030 [2022-07-12 01:04:13,917 INFO L226 Difference]: Without dead ends: 11269 [2022-07-12 01:04:13,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:04:13,927 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 689 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 2361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:13,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 242 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 2361 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 01:04:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11269 states. [2022-07-12 01:04:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11269 to 9767. [2022-07-12 01:04:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.4348761007577309) internal successors, (14013), 9766 states have internal predecessors, (14013), 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) [2022-07-12 01:04:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 14013 transitions. [2022-07-12 01:04:14,097 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 14013 transitions. Word has length 188 [2022-07-12 01:04:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:14,098 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 14013 transitions. [2022-07-12 01:04:14,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2022-07-12 01:04:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 14013 transitions. [2022-07-12 01:04:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-12 01:04:14,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:14,101 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:14,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 01:04:14,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:04:14,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1188783154, now seen corresponding path program 1 times [2022-07-12 01:04:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702474757] [2022-07-12 01:04:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 01:04:14,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:14,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702474757] [2022-07-12 01:04:14,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702474757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:14,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:14,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:14,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151809780] [2022-07-12 01:04:14,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:14,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:04:14,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:14,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:04:14,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:14,503 INFO L87 Difference]: Start difference. First operand 9767 states and 14013 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 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) [2022-07-12 01:04:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:17,764 INFO L93 Difference]: Finished difference Result 25579 states and 38024 transitions. [2022-07-12 01:04:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:04:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 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 255 [2022-07-12 01:04:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:17,799 INFO L225 Difference]: With dead ends: 25579 [2022-07-12 01:04:17,799 INFO L226 Difference]: Without dead ends: 15777 [2022-07-12 01:04:17,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:17,813 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 776 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3813 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 4355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:17,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 402 Invalid, 4355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3813 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 01:04:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15777 states. [2022-07-12 01:04:17,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15777 to 14273. [2022-07-12 01:04:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.389784192825112) internal successors, (19835), 14272 states have internal predecessors, (19835), 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) [2022-07-12 01:04:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 19835 transitions. [2022-07-12 01:04:18,025 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 19835 transitions. Word has length 255 [2022-07-12 01:04:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:18,025 INFO L495 AbstractCegarLoop]: Abstraction has 14273 states and 19835 transitions. [2022-07-12 01:04:18,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 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) [2022-07-12 01:04:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 19835 transitions. [2022-07-12 01:04:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-12 01:04:18,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:18,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:18,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:04:18,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1755489975, now seen corresponding path program 1 times [2022-07-12 01:04:18,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:18,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023647139] [2022-07-12 01:04:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:18,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-12 01:04:18,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:18,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023647139] [2022-07-12 01:04:18,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023647139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:18,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:18,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:04:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745942921] [2022-07-12 01:04:18,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:18,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:18,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:18,162 INFO L87 Difference]: Start difference. First operand 14273 states and 19835 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 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) [2022-07-12 01:04:20,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:20,452 INFO L93 Difference]: Finished difference Result 36054 states and 50017 transitions. [2022-07-12 01:04:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:20,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 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 277 [2022-07-12 01:04:20,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:20,484 INFO L225 Difference]: With dead ends: 36054 [2022-07-12 01:04:20,485 INFO L226 Difference]: Without dead ends: 21783 [2022-07-12 01:04:20,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:20,501 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 694 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:20,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 422 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 01:04:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21783 states. [2022-07-12 01:04:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21783 to 18779. [2022-07-12 01:04:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.2279262967302162) internal successors, (23058), 18778 states have internal predecessors, (23058), 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) [2022-07-12 01:04:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 23058 transitions. [2022-07-12 01:04:20,704 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 23058 transitions. Word has length 277 [2022-07-12 01:04:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:20,705 INFO L495 AbstractCegarLoop]: Abstraction has 18779 states and 23058 transitions. [2022-07-12 01:04:20,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 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) [2022-07-12 01:04:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 23058 transitions. [2022-07-12 01:04:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-07-12 01:04:20,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:20,709 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:20,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 01:04:20,710 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2041064325, now seen corresponding path program 1 times [2022-07-12 01:04:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:20,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86487353] [2022-07-12 01:04:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:20,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 01:04:20,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:20,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86487353] [2022-07-12 01:04:20,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86487353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:20,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:20,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206936200] [2022-07-12 01:04:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:20,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:20,863 INFO L87 Difference]: Start difference. First operand 18779 states and 23058 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2022-07-12 01:04:23,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:23,408 INFO L93 Difference]: Finished difference Result 45817 states and 57283 transitions. [2022-07-12 01:04:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:23,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 356 [2022-07-12 01:04:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:23,449 INFO L225 Difference]: With dead ends: 45817 [2022-07-12 01:04:23,450 INFO L226 Difference]: Without dead ends: 27040 [2022-07-12 01:04:23,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:23,467 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:23,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 105 Invalid, 3006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:04:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27040 states. [2022-07-12 01:04:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 27040. [2022-07-12 01:04:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.243463145826399) internal successors, (33622), 27039 states have internal predecessors, (33622), 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) [2022-07-12 01:04:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 33622 transitions. [2022-07-12 01:04:23,793 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 33622 transitions. Word has length 356 [2022-07-12 01:04:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:23,794 INFO L495 AbstractCegarLoop]: Abstraction has 27040 states and 33622 transitions. [2022-07-12 01:04:23,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2022-07-12 01:04:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 33622 transitions. [2022-07-12 01:04:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-07-12 01:04:23,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:23,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:23,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:04:23,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:23,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:23,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1545703729, now seen corresponding path program 1 times [2022-07-12 01:04:23,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:23,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769269054] [2022-07-12 01:04:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:23,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 122 proven. 108 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-12 01:04:23,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:23,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769269054] [2022-07-12 01:04:23,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769269054] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:04:23,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602726454] [2022-07-12 01:04:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:23,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:04:23,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:04:23,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:04:23,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:04:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:24,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:04:24,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:04:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 01:04:24,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:04:24,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602726454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:24,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:04:24,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 01:04:24,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473001108] [2022-07-12 01:04:24,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:24,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:24,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:24,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:04:24,222 INFO L87 Difference]: Start difference. First operand 27040 states and 33622 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2022-07-12 01:04:26,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:26,764 INFO L93 Difference]: Finished difference Result 61588 states and 77003 transitions. [2022-07-12 01:04:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:26,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 360 [2022-07-12 01:04:26,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:26,807 INFO L225 Difference]: With dead ends: 61588 [2022-07-12 01:04:26,808 INFO L226 Difference]: Without dead ends: 34550 [2022-07-12 01:04:26,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:04:26,833 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:26,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 235 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 01:04:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34550 states. [2022-07-12 01:04:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34550 to 34550. [2022-07-12 01:04:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34550 states, 34549 states have (on average 1.2338707343193724) internal successors, (42629), 34549 states have internal predecessors, (42629), 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) [2022-07-12 01:04:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34550 states to 34550 states and 42629 transitions. [2022-07-12 01:04:27,145 INFO L78 Accepts]: Start accepts. Automaton has 34550 states and 42629 transitions. Word has length 360 [2022-07-12 01:04:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:27,145 INFO L495 AbstractCegarLoop]: Abstraction has 34550 states and 42629 transitions. [2022-07-12 01:04:27,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2022-07-12 01:04:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 34550 states and 42629 transitions. [2022-07-12 01:04:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-07-12 01:04:27,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:27,149 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:27,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:04:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-12 01:04:27,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash -671244681, now seen corresponding path program 1 times [2022-07-12 01:04:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:27,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941585629] [2022-07-12 01:04:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-12 01:04:27,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:27,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941585629] [2022-07-12 01:04:27,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941585629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:27,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:27,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:27,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411204837] [2022-07-12 01:04:27,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:27,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:27,579 INFO L87 Difference]: Start difference. First operand 34550 states and 42629 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2022-07-12 01:04:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:29,917 INFO L93 Difference]: Finished difference Result 85620 states and 105162 transitions. [2022-07-12 01:04:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:29,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 371 [2022-07-12 01:04:29,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:29,985 INFO L225 Difference]: With dead ends: 85620 [2022-07-12 01:04:29,985 INFO L226 Difference]: Without dead ends: 51072 [2022-07-12 01:04:30,014 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 [2022-07-12 01:04:30,016 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 728 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:30,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1360 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 01:04:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51072 states. [2022-07-12 01:04:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51072 to 49570. [2022-07-12 01:04:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49570 states, 49569 states have (on average 1.1941737779660675) internal successors, (59194), 49569 states have internal predecessors, (59194), 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) [2022-07-12 01:04:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49570 states to 49570 states and 59194 transitions. [2022-07-12 01:04:30,730 INFO L78 Accepts]: Start accepts. Automaton has 49570 states and 59194 transitions. Word has length 371 [2022-07-12 01:04:30,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:30,730 INFO L495 AbstractCegarLoop]: Abstraction has 49570 states and 59194 transitions. [2022-07-12 01:04:30,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2022-07-12 01:04:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand 49570 states and 59194 transitions. [2022-07-12 01:04:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-07-12 01:04:30,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:30,739 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:30,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 01:04:30,740 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash -564373778, now seen corresponding path program 1 times [2022-07-12 01:04:30,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:30,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728091016] [2022-07-12 01:04:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 513 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-12 01:04:30,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:30,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728091016] [2022-07-12 01:04:30,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728091016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:30,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:30,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101400344] [2022-07-12 01:04:30,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:30,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:30,875 INFO L87 Difference]: Start difference. First operand 49570 states and 59194 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2022-07-12 01:04:33,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:33,969 INFO L93 Difference]: Finished difference Result 120917 states and 144542 transitions. [2022-07-12 01:04:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:33,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 460 [2022-07-12 01:04:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:34,057 INFO L225 Difference]: With dead ends: 120917 [2022-07-12 01:04:34,057 INFO L226 Difference]: Without dead ends: 71349 [2022-07-12 01:04:34,089 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 [2022-07-12 01:04:34,089 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 639 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:34,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1317 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 01:04:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71349 states. [2022-07-12 01:04:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71349 to 70598. [2022-07-12 01:04:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70598 states, 70597 states have (on average 1.1828831253452696) internal successors, (83508), 70597 states have internal predecessors, (83508), 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) [2022-07-12 01:04:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70598 states to 70598 states and 83508 transitions. [2022-07-12 01:04:34,958 INFO L78 Accepts]: Start accepts. Automaton has 70598 states and 83508 transitions. Word has length 460 [2022-07-12 01:04:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:34,958 INFO L495 AbstractCegarLoop]: Abstraction has 70598 states and 83508 transitions. [2022-07-12 01:04:34,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2022-07-12 01:04:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 70598 states and 83508 transitions. [2022-07-12 01:04:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-07-12 01:04:34,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:34,968 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:34,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:04:34,969 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash -877459784, now seen corresponding path program 1 times [2022-07-12 01:04:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:34,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724441844] [2022-07-12 01:04:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-12 01:04:35,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:35,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724441844] [2022-07-12 01:04:35,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724441844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:35,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:35,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:35,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630799311] [2022-07-12 01:04:35,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:35,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:35,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:35,301 INFO L87 Difference]: Start difference. First operand 70598 states and 83508 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2022-07-12 01:04:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:38,101 INFO L93 Difference]: Finished difference Result 144949 states and 170856 transitions. [2022-07-12 01:04:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 464 [2022-07-12 01:04:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:38,199 INFO L225 Difference]: With dead ends: 144949 [2022-07-12 01:04:38,199 INFO L226 Difference]: Without dead ends: 69847 [2022-07-12 01:04:38,247 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 [2022-07-12 01:04:38,248 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 725 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:38,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1217 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 01:04:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69847 states. [2022-07-12 01:04:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69847 to 62337. [2022-07-12 01:04:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62337 states, 62336 states have (on average 1.1272458932238194) internal successors, (70268), 62336 states have internal predecessors, (70268), 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) [2022-07-12 01:04:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62337 states to 62337 states and 70268 transitions. [2022-07-12 01:04:39,080 INFO L78 Accepts]: Start accepts. Automaton has 62337 states and 70268 transitions. Word has length 464 [2022-07-12 01:04:39,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:39,080 INFO L495 AbstractCegarLoop]: Abstraction has 62337 states and 70268 transitions. [2022-07-12 01:04:39,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2022-07-12 01:04:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 62337 states and 70268 transitions. [2022-07-12 01:04:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-07-12 01:04:39,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:39,095 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:39,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 01:04:39,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:39,096 INFO L85 PathProgramCache]: Analyzing trace with hash 598408123, now seen corresponding path program 1 times [2022-07-12 01:04:39,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:39,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567964605] [2022-07-12 01:04:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 408 proven. 108 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-12 01:04:39,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:39,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567964605] [2022-07-12 01:04:39,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567964605] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:04:39,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507984400] [2022-07-12 01:04:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:39,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:04:39,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:04:39,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:04:39,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 01:04:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:39,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:04:39,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:04:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-12 01:04:39,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:04:39,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507984400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:39,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:04:39,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-12 01:04:39,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247334239] [2022-07-12 01:04:39,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:39,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:39,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:04:39,862 INFO L87 Difference]: Start difference. First operand 62337 states and 70268 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2022-07-12 01:04:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:42,043 INFO L93 Difference]: Finished difference Result 123921 states and 139778 transitions. [2022-07-12 01:04:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 530 [2022-07-12 01:04:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:42,295 INFO L225 Difference]: With dead ends: 123921 [2022-07-12 01:04:42,296 INFO L226 Difference]: Without dead ends: 62337 [2022-07-12 01:04:42,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:04:42,312 INFO L413 NwaCegarLoop]: 1294 mSDtfsCounter, 685 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:42,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1302 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:04:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62337 states. [2022-07-12 01:04:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62337 to 60084. [2022-07-12 01:04:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60084 states, 60083 states have (on average 1.0938368590117005) internal successors, (65721), 60083 states have internal predecessors, (65721), 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) [2022-07-12 01:04:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60084 states to 60084 states and 65721 transitions. [2022-07-12 01:04:43,013 INFO L78 Accepts]: Start accepts. Automaton has 60084 states and 65721 transitions. Word has length 530 [2022-07-12 01:04:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:43,014 INFO L495 AbstractCegarLoop]: Abstraction has 60084 states and 65721 transitions. [2022-07-12 01:04:43,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2022-07-12 01:04:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 60084 states and 65721 transitions. [2022-07-12 01:04:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-07-12 01:04:43,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:43,046 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:43,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 01:04:43,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:04:43,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:43,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1299614349, now seen corresponding path program 1 times [2022-07-12 01:04:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:43,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112195667] [2022-07-12 01:04:43,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-12 01:04:43,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:43,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112195667] [2022-07-12 01:04:43,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112195667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:43,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:43,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174672978] [2022-07-12 01:04:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:43,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:04:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:04:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:43,581 INFO L87 Difference]: Start difference. First operand 60084 states and 65721 transitions. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 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) [2022-07-12 01:04:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:47,054 INFO L93 Difference]: Finished difference Result 180997 states and 199293 transitions. [2022-07-12 01:04:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:04:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 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 611 [2022-07-12 01:04:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:47,198 INFO L225 Difference]: With dead ends: 180997 [2022-07-12 01:04:47,199 INFO L226 Difference]: Without dead ends: 121666 [2022-07-12 01:04:47,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:04:47,241 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1693 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4642 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 5216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 4642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:47,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1693 Valid, 57 Invalid, 5216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 4642 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 01:04:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121666 states. [2022-07-12 01:04:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121666 to 120915. [2022-07-12 01:04:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120915 states, 120914 states have (on average 1.0979125659559688) internal successors, (132753), 120914 states have internal predecessors, (132753), 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) [2022-07-12 01:04:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120915 states to 120915 states and 132753 transitions. [2022-07-12 01:04:49,127 INFO L78 Accepts]: Start accepts. Automaton has 120915 states and 132753 transitions. Word has length 611 [2022-07-12 01:04:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:49,128 INFO L495 AbstractCegarLoop]: Abstraction has 120915 states and 132753 transitions. [2022-07-12 01:04:49,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 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) [2022-07-12 01:04:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 120915 states and 132753 transitions. [2022-07-12 01:04:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-07-12 01:04:49,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:49,151 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:49,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:04:49,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:49,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:49,152 INFO L85 PathProgramCache]: Analyzing trace with hash -784186689, now seen corresponding path program 1 times [2022-07-12 01:04:49,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:49,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705075572] [2022-07-12 01:04:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:49,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-12 01:04:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705075572] [2022-07-12 01:04:49,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705075572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:49,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:49,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:49,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749704439] [2022-07-12 01:04:49,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:49,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:49,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:49,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:49,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:49,290 INFO L87 Difference]: Start difference. First operand 120915 states and 132753 transitions. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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) [2022-07-12 01:04:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:52,688 INFO L93 Difference]: Finished difference Result 244081 states and 267793 transitions. [2022-07-12 01:04:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:52,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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 618 [2022-07-12 01:04:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:52,842 INFO L225 Difference]: With dead ends: 244081 [2022-07-12 01:04:52,843 INFO L226 Difference]: Without dead ends: 123919 [2022-07-12 01:04:52,887 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 [2022-07-12 01:04:52,888 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 735 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:52,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 162 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:04:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123919 states. [2022-07-12 01:04:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123919 to 120915. [2022-07-12 01:04:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120915 states, 120914 states have (on average 1.0912053194832692) internal successors, (131942), 120914 states have internal predecessors, (131942), 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) [2022-07-12 01:04:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120915 states to 120915 states and 131942 transitions. [2022-07-12 01:04:54,622 INFO L78 Accepts]: Start accepts. Automaton has 120915 states and 131942 transitions. Word has length 618 [2022-07-12 01:04:54,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:04:54,622 INFO L495 AbstractCegarLoop]: Abstraction has 120915 states and 131942 transitions. [2022-07-12 01:04:54,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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) [2022-07-12 01:04:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 120915 states and 131942 transitions. [2022-07-12 01:04:54,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-07-12 01:04:54,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:04:54,652 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:04:54,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 01:04:54,652 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:04:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:04:54,653 INFO L85 PathProgramCache]: Analyzing trace with hash -18168460, now seen corresponding path program 1 times [2022-07-12 01:04:54,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:04:54,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819613414] [2022-07-12 01:04:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:04:54,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:04:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:04:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 567 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-12 01:04:54,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:04:54,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819613414] [2022-07-12 01:04:54,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819613414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:04:54,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:04:54,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:04:54,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738271010] [2022-07-12 01:04:54,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:04:54,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:04:54,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:04:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:04:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:04:54,944 INFO L87 Difference]: Start difference. First operand 120915 states and 131942 transitions. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2022-07-12 01:04:58,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:04:58,308 INFO L93 Difference]: Finished difference Result 319181 states and 347935 transitions. [2022-07-12 01:04:58,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:04:58,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 656 [2022-07-12 01:04:58,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:04:58,632 INFO L225 Difference]: With dead ends: 319181 [2022-07-12 01:04:58,632 INFO L226 Difference]: Without dead ends: 199019 [2022-07-12 01:04:58,699 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 [2022-07-12 01:04:58,700 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 484 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:04:58,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1276 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:04:58,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199019 states. [2022-07-12 01:05:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199019 to 177991. [2022-07-12 01:05:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177991 states, 177990 states have (on average 1.0754649137592) internal successors, (191422), 177990 states have internal predecessors, (191422), 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) [2022-07-12 01:05:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177991 states to 177991 states and 191422 transitions. [2022-07-12 01:05:01,250 INFO L78 Accepts]: Start accepts. Automaton has 177991 states and 191422 transitions. Word has length 656 [2022-07-12 01:05:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:01,250 INFO L495 AbstractCegarLoop]: Abstraction has 177991 states and 191422 transitions. [2022-07-12 01:05:01,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2022-07-12 01:05:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 177991 states and 191422 transitions. [2022-07-12 01:05:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2022-07-12 01:05:01,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:01,287 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:01,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 01:05:01,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash -728818711, now seen corresponding path program 1 times [2022-07-12 01:05:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:01,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289604762] [2022-07-12 01:05:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 694 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-12 01:05:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:01,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289604762] [2022-07-12 01:05:01,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289604762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:01,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:01,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:01,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567870614] [2022-07-12 01:05:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:01,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:01,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:05:01,489 INFO L87 Difference]: Start difference. First operand 177991 states and 191422 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2022-07-12 01:05:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:04,508 INFO L93 Difference]: Finished difference Result 355229 states and 382086 transitions. [2022-07-12 01:05:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:04,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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 772 [2022-07-12 01:05:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:04,721 INFO L225 Difference]: With dead ends: 355229 [2022-07-12 01:05:04,721 INFO L226 Difference]: Without dead ends: 177991 [2022-07-12 01:05:05,104 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 [2022-07-12 01:05:05,108 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 405 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:05,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1262 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 01:05:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177991 states. [2022-07-12 01:05:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177991 to 173485. [2022-07-12 01:05:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173485 states, 173484 states have (on average 1.0592965345507366) internal successors, (183771), 173484 states have internal predecessors, (183771), 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) [2022-07-12 01:05:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173485 states to 173485 states and 183771 transitions. [2022-07-12 01:05:07,453 INFO L78 Accepts]: Start accepts. Automaton has 173485 states and 183771 transitions. Word has length 772 [2022-07-12 01:05:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:07,453 INFO L495 AbstractCegarLoop]: Abstraction has 173485 states and 183771 transitions. [2022-07-12 01:05:07,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2022-07-12 01:05:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 173485 states and 183771 transitions. [2022-07-12 01:05:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2022-07-12 01:05:07,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:07,539 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:07,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 01:05:07,539 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash 154466670, now seen corresponding path program 1 times [2022-07-12 01:05:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:07,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19054003] [2022-07-12 01:05:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-12 01:05:07,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:07,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19054003] [2022-07-12 01:05:07,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19054003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:07,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:07,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:07,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728940584] [2022-07-12 01:05:07,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:07,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:07,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:07,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:05:07,956 INFO L87 Difference]: Start difference. First operand 173485 states and 183771 transitions. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2022-07-12 01:05:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:11,801 INFO L93 Difference]: Finished difference Result 419815 states and 446122 transitions. [2022-07-12 01:05:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:11,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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 804 [2022-07-12 01:05:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:12,183 INFO L225 Difference]: With dead ends: 419815 [2022-07-12 01:05:12,183 INFO L226 Difference]: Without dead ends: 247083 [2022-07-12 01:05:12,243 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 [2022-07-12 01:05:12,244 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 747 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:12,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 597 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 01:05:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247083 states. [2022-07-12 01:05:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247083 to 232814. [2022-07-12 01:05:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232814 states, 232813 states have (on average 1.0520460627198653) internal successors, (244930), 232813 states have internal predecessors, (244930), 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) [2022-07-12 01:05:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232814 states to 232814 states and 244930 transitions. [2022-07-12 01:05:15,563 INFO L78 Accepts]: Start accepts. Automaton has 232814 states and 244930 transitions. Word has length 804 [2022-07-12 01:05:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:15,564 INFO L495 AbstractCegarLoop]: Abstraction has 232814 states and 244930 transitions. [2022-07-12 01:05:15,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2022-07-12 01:05:15,564 INFO L276 IsEmpty]: Start isEmpty. Operand 232814 states and 244930 transitions. [2022-07-12 01:05:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2022-07-12 01:05:15,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:15,668 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:15,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 01:05:15,669 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1772033187, now seen corresponding path program 1 times [2022-07-12 01:05:15,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:15,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156879477] [2022-07-12 01:05:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:15,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:05:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:05:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2022-07-12 01:05:16,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:05:16,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156879477] [2022-07-12 01:05:16,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156879477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:05:16,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:05:16,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:05:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006495359] [2022-07-12 01:05:16,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:05:16,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:05:16,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:05:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:05:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:05:16,146 INFO L87 Difference]: Start difference. First operand 232814 states and 244930 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2022-07-12 01:05:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:05:19,278 INFO L93 Difference]: Finished difference Result 484401 states and 510727 transitions. [2022-07-12 01:05:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:05:19,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 895 [2022-07-12 01:05:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:05:19,670 INFO L225 Difference]: With dead ends: 484401 [2022-07-12 01:05:19,670 INFO L226 Difference]: Without dead ends: 290641 [2022-07-12 01:05:20,152 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 [2022-07-12 01:05:20,153 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 832 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:05:20,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1392 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2518 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 01:05:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290641 states. [2022-07-12 01:05:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290641 to 232814. [2022-07-12 01:05:22,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232814 states, 232813 states have (on average 1.0520460627198653) internal successors, (244930), 232813 states have internal predecessors, (244930), 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) [2022-07-12 01:05:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232814 states to 232814 states and 244930 transitions. [2022-07-12 01:05:23,131 INFO L78 Accepts]: Start accepts. Automaton has 232814 states and 244930 transitions. Word has length 895 [2022-07-12 01:05:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:05:23,132 INFO L495 AbstractCegarLoop]: Abstraction has 232814 states and 244930 transitions. [2022-07-12 01:05:23,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2022-07-12 01:05:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 232814 states and 244930 transitions. [2022-07-12 01:05:23,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2022-07-12 01:05:23,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:05:23,197 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:05:23,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 01:05:23,209 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:05:23,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:05:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1676050214, now seen corresponding path program 1 times [2022-07-12 01:05:23,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:05:23,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098895436] [2022-07-12 01:05:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:05:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms