./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f43d028ba6ad7288ae454484b752e467a139fa9128b5cbd8640720a39b09e4f4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:00:11,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:00:11,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:00:11,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:00:11,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:00:11,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:00:11,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:00:11,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:00:11,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:00:11,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:00:11,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:00:11,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:00:11,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:00:11,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:00:11,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:00:11,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:00:11,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:00:11,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:00:11,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:00:11,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:00:11,433 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:00:11,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:00:11,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:00:11,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:00:11,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:00:11,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:00:11,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:00:11,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:00:11,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:00:11,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:00:11,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:00:11,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:00:11,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:00:11,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:00:11,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:00:11,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:00:11,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:00:11,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:00:11,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:00:11,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:00:11,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:00:11,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:00:11,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:00:11,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:00:11,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:00:11,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:00:11,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:00:11,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:00:11,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:00:11,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:00:11,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:00:11,489 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:00:11,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:00:11,490 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:00:11,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:00:11,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:00:11,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:00:11,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:00:11,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:00:11,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:00:11,492 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:00:11,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:00:11,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:00:11,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:00:11,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:00:11,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:00:11,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:00:11,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:00:11,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:00:11,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:00:11,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:00:11,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:00:11,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:00:11,494 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:00:11,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:00:11,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:00:11,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f43d028ba6ad7288ae454484b752e467a139fa9128b5cbd8640720a39b09e4f4 [2022-07-19 18:00:11,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:00:11,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:00:11,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:00:11,784 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:00:11,784 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:00:11,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:00:11,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67626e98/5ee1d38520a0419da6f8977f4699ce91/FLAG3f25ee0f6 [2022-07-19 18:00:12,295 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:00:12,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:00:12,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67626e98/5ee1d38520a0419da6f8977f4699ce91/FLAG3f25ee0f6 [2022-07-19 18:00:12,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67626e98/5ee1d38520a0419da6f8977f4699ce91 [2022-07-19 18:00:12,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:00:12,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:00:12,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:00:12,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:00:12,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:00:12,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:00:12" (1/1) ... [2022-07-19 18:00:12,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b32a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:12, skipping insertion in model container [2022-07-19 18:00:12,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:00:12" (1/1) ... [2022-07-19 18:00:12,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:00:12,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:00:13,107 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14043,14056] [2022-07-19 18:00:13,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:00:13,215 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:00:13,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14043,14056] [2022-07-19 18:00:13,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:00:13,342 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:00:13,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13 WrapperNode [2022-07-19 18:00:13,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:00:13,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:00:13,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:00:13,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:00:13,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,428 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1155 [2022-07-19 18:00:13,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:00:13,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:00:13,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:00:13,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:00:13,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:00:13,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:00:13,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:00:13,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:00:13,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (1/1) ... [2022-07-19 18:00:13,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:00:13,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:00:13,509 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) [2022-07-19 18:00:13,552 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 [2022-07-19 18:00:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:00:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:00:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:00:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:00:13,725 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:00:13,727 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:00:14,597 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:00:14,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:00:14,607 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:00:14,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:00:14 BoogieIcfgContainer [2022-07-19 18:00:14,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:00:14,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:00:14,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:00:14,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:00:14,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:00:12" (1/3) ... [2022-07-19 18:00:14,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474bc5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:00:14, skipping insertion in model container [2022-07-19 18:00:14,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:00:13" (2/3) ... [2022-07-19 18:00:14,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474bc5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:00:14, skipping insertion in model container [2022-07-19 18:00:14,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:00:14" (3/3) ... [2022-07-19 18:00:14,618 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:00:14,632 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:00:14,632 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 18:00:14,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:00:14,687 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@3a491dfa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27216bc1 [2022-07-19 18:00:14,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 18:00:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 301 states, 299 states have (on average 1.7892976588628762) internal successors, (535), 300 states have internal predecessors, (535), 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) [2022-07-19 18:00:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 18:00:14,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:14,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:14,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:14,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1732515754, now seen corresponding path program 1 times [2022-07-19 18:00:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:14,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178471477] [2022-07-19 18:00:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:14,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:15,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:15,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178471477] [2022-07-19 18:00:15,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178471477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:15,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:15,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:00:15,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088959421] [2022-07-19 18:00:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:15,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:00:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:15,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:00:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:00:15,318 INFO L87 Difference]: Start difference. First operand has 301 states, 299 states have (on average 1.7892976588628762) internal successors, (535), 300 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2022-07-19 18:00:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:15,642 INFO L93 Difference]: Finished difference Result 877 states and 1562 transitions. [2022-07-19 18:00:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:00:15,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 143 [2022-07-19 18:00:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:15,680 INFO L225 Difference]: With dead ends: 877 [2022-07-19 18:00:15,682 INFO L226 Difference]: Without dead ends: 579 [2022-07-19 18:00:15,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:00:15,694 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 1101 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:15,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1414 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:00:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-07-19 18:00:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2022-07-19 18:00:15,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.4513888888888888) internal successors, (836), 576 states have internal predecessors, (836), 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) [2022-07-19 18:00:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 836 transitions. [2022-07-19 18:00:15,834 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 836 transitions. Word has length 143 [2022-07-19 18:00:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:15,835 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 836 transitions. [2022-07-19 18:00:15,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2022-07-19 18:00:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 836 transitions. [2022-07-19 18:00:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 18:00:15,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:15,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:15,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:00:15,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1916078526, now seen corresponding path program 1 times [2022-07-19 18:00:15,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:15,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378574709] [2022-07-19 18:00:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:15,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:16,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:16,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378574709] [2022-07-19 18:00:16,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378574709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:16,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:16,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:00:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255056868] [2022-07-19 18:00:16,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:00:16,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:00:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:00:16,032 INFO L87 Difference]: Start difference. First operand 577 states and 836 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2022-07-19 18:00:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:16,124 INFO L93 Difference]: Finished difference Result 1693 states and 2446 transitions. [2022-07-19 18:00:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:00:16,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 144 [2022-07-19 18:00:16,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:16,130 INFO L225 Difference]: With dead ends: 1693 [2022-07-19 18:00:16,131 INFO L226 Difference]: Without dead ends: 1144 [2022-07-19 18:00:16,137 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 [2022-07-19 18:00:16,139 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 425 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:16,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 929 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2022-07-19 18:00:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 579. [2022-07-19 18:00:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.4498269896193772) internal successors, (838), 578 states have internal predecessors, (838), 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) [2022-07-19 18:00:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 838 transitions. [2022-07-19 18:00:16,208 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 838 transitions. Word has length 144 [2022-07-19 18:00:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:16,211 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 838 transitions. [2022-07-19 18:00:16,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2022-07-19 18:00:16,211 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 838 transitions. [2022-07-19 18:00:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 18:00:16,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:16,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:16,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:00:16,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:16,221 INFO L85 PathProgramCache]: Analyzing trace with hash 372219765, now seen corresponding path program 1 times [2022-07-19 18:00:16,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:16,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933114441] [2022-07-19 18:00:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:16,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:16,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:16,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933114441] [2022-07-19 18:00:16,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933114441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:16,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:16,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:00:16,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94258404] [2022-07-19 18:00:16,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:16,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:00:16,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:00:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:00:16,471 INFO L87 Difference]: Start difference. First operand 579 states and 838 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-07-19 18:00:16,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:16,646 INFO L93 Difference]: Finished difference Result 1653 states and 2378 transitions. [2022-07-19 18:00:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:00:16,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 145 [2022-07-19 18:00:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:16,653 INFO L225 Difference]: With dead ends: 1653 [2022-07-19 18:00:16,653 INFO L226 Difference]: Without dead ends: 1104 [2022-07-19 18:00:16,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:00:16,662 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 855 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:16,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1115 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:00:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-07-19 18:00:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1102. [2022-07-19 18:00:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 1.4277929155313351) internal successors, (1572), 1101 states have internal predecessors, (1572), 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) [2022-07-19 18:00:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1572 transitions. [2022-07-19 18:00:16,793 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1572 transitions. Word has length 145 [2022-07-19 18:00:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:16,794 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1572 transitions. [2022-07-19 18:00:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-07-19 18:00:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1572 transitions. [2022-07-19 18:00:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 18:00:16,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:16,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:16,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:00:16,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:16,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:16,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1286234625, now seen corresponding path program 1 times [2022-07-19 18:00:16,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:16,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423186894] [2022-07-19 18:00:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:16,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:16,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:16,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423186894] [2022-07-19 18:00:16,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423186894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:16,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:16,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:00:16,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711390776] [2022-07-19 18:00:16,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:16,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:00:16,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:16,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:00:16,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:00:16,876 INFO L87 Difference]: Start difference. First operand 1102 states and 1572 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2022-07-19 18:00:17,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:17,090 INFO L93 Difference]: Finished difference Result 3230 states and 4596 transitions. [2022-07-19 18:00:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:00:17,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 146 [2022-07-19 18:00:17,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:17,101 INFO L225 Difference]: With dead ends: 3230 [2022-07-19 18:00:17,102 INFO L226 Difference]: Without dead ends: 2172 [2022-07-19 18:00:17,106 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 [2022-07-19 18:00:17,113 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 411 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:17,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1271 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-07-19 18:00:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1106. [2022-07-19 18:00:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 1.4262443438914028) internal successors, (1576), 1105 states have internal predecessors, (1576), 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) [2022-07-19 18:00:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1576 transitions. [2022-07-19 18:00:17,225 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1576 transitions. Word has length 146 [2022-07-19 18:00:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:17,227 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1576 transitions. [2022-07-19 18:00:17,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2022-07-19 18:00:17,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1576 transitions. [2022-07-19 18:00:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 18:00:17,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:17,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:17,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:00:17,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1557393051, now seen corresponding path program 1 times [2022-07-19 18:00:17,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:17,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167986892] [2022-07-19 18:00:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:17,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:17,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:17,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167986892] [2022-07-19 18:00:17,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167986892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:17,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:17,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:00:17,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420970388] [2022-07-19 18:00:17,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:17,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:00:17,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:17,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:00:17,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:00:17,336 INFO L87 Difference]: Start difference. First operand 1106 states and 1576 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2022-07-19 18:00:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:17,533 INFO L93 Difference]: Finished difference Result 2922 states and 4192 transitions. [2022-07-19 18:00:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:00:17,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 147 [2022-07-19 18:00:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:17,543 INFO L225 Difference]: With dead ends: 2922 [2022-07-19 18:00:17,544 INFO L226 Difference]: Without dead ends: 2120 [2022-07-19 18:00:17,546 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 [2022-07-19 18:00:17,546 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 356 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:17,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1196 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2022-07-19 18:00:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2118. [2022-07-19 18:00:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 2117 states have (on average 1.4095418044402457) internal successors, (2984), 2117 states have internal predecessors, (2984), 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) [2022-07-19 18:00:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2984 transitions. [2022-07-19 18:00:17,741 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2984 transitions. Word has length 147 [2022-07-19 18:00:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:17,742 INFO L495 AbstractCegarLoop]: Abstraction has 2118 states and 2984 transitions. [2022-07-19 18:00:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2022-07-19 18:00:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2984 transitions. [2022-07-19 18:00:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 18:00:17,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:17,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:17,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:00:17,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1661864862, now seen corresponding path program 1 times [2022-07-19 18:00:17,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:17,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914692125] [2022-07-19 18:00:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:17,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:17,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914692125] [2022-07-19 18:00:17,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914692125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:17,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:17,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:00:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390607280] [2022-07-19 18:00:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:17,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:00:17,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:00:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:00:17,909 INFO L87 Difference]: Start difference. First operand 2118 states and 2984 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2022-07-19 18:00:18,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:18,298 INFO L93 Difference]: Finished difference Result 5910 states and 8337 transitions. [2022-07-19 18:00:18,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:00:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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 147 [2022-07-19 18:00:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:18,315 INFO L225 Difference]: With dead ends: 5910 [2022-07-19 18:00:18,316 INFO L226 Difference]: Without dead ends: 3829 [2022-07-19 18:00:18,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:00:18,321 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 902 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:18,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1501 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:00:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2022-07-19 18:00:18,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3827. [2022-07-19 18:00:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3826 states have (on average 1.3993727130162048) internal successors, (5354), 3826 states have internal predecessors, (5354), 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) [2022-07-19 18:00:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5354 transitions. [2022-07-19 18:00:18,683 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5354 transitions. Word has length 147 [2022-07-19 18:00:18,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:18,684 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5354 transitions. [2022-07-19 18:00:18,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2022-07-19 18:00:18,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5354 transitions. [2022-07-19 18:00:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 18:00:18,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:18,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:18,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:00:18,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1862693396, now seen corresponding path program 1 times [2022-07-19 18:00:18,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:18,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086260810] [2022-07-19 18:00:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:18,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:18,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:18,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086260810] [2022-07-19 18:00:18,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086260810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:18,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:18,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:00:18,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070020776] [2022-07-19 18:00:18,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:18,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:00:18,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:18,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:00:18,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:00:18,844 INFO L87 Difference]: Start difference. First operand 3827 states and 5354 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2022-07-19 18:00:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:19,283 INFO L93 Difference]: Finished difference Result 7881 states and 10938 transitions. [2022-07-19 18:00:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:00:19,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 147 [2022-07-19 18:00:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:19,302 INFO L225 Difference]: With dead ends: 7881 [2022-07-19 18:00:19,302 INFO L226 Difference]: Without dead ends: 4171 [2022-07-19 18:00:19,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:00:19,311 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 844 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:19,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1099 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:00:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2022-07-19 18:00:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4031. [2022-07-19 18:00:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 4030 states have (on average 1.3841191066997518) internal successors, (5578), 4030 states have internal predecessors, (5578), 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) [2022-07-19 18:00:19,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 5578 transitions. [2022-07-19 18:00:19,770 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 5578 transitions. Word has length 147 [2022-07-19 18:00:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:19,771 INFO L495 AbstractCegarLoop]: Abstraction has 4031 states and 5578 transitions. [2022-07-19 18:00:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2022-07-19 18:00:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 5578 transitions. [2022-07-19 18:00:19,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 18:00:19,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:19,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:19,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:00:19,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:19,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash -292089536, now seen corresponding path program 1 times [2022-07-19 18:00:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:19,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420114297] [2022-07-19 18:00:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:19,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:19,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420114297] [2022-07-19 18:00:19,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420114297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:19,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:19,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:00:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528030237] [2022-07-19 18:00:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:19,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:00:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:00:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:00:19,825 INFO L87 Difference]: Start difference. First operand 4031 states and 5578 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2022-07-19 18:00:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:20,535 INFO L93 Difference]: Finished difference Result 11411 states and 15864 transitions. [2022-07-19 18:00:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:00:20,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2022-07-19 18:00:20,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:20,569 INFO L225 Difference]: With dead ends: 11411 [2022-07-19 18:00:20,569 INFO L226 Difference]: Without dead ends: 7937 [2022-07-19 18:00:20,579 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 [2022-07-19 18:00:20,580 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 397 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:20,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2022-07-19 18:00:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 4047. [2022-07-19 18:00:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 4046 states have (on average 1.3826000988630747) internal successors, (5594), 4046 states have internal predecessors, (5594), 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) [2022-07-19 18:00:21,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5594 transitions. [2022-07-19 18:00:21,195 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5594 transitions. Word has length 148 [2022-07-19 18:00:21,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:21,196 INFO L495 AbstractCegarLoop]: Abstraction has 4047 states and 5594 transitions. [2022-07-19 18:00:21,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2022-07-19 18:00:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5594 transitions. [2022-07-19 18:00:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 18:00:21,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:21,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:21,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:00:21,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:21,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:21,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1315250227, now seen corresponding path program 1 times [2022-07-19 18:00:21,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:21,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371499257] [2022-07-19 18:00:21,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:21,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:21,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:21,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371499257] [2022-07-19 18:00:21,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371499257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:21,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:21,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:00:21,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118359999] [2022-07-19 18:00:21,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:21,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:00:21,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:21,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:00:21,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:00:21,352 INFO L87 Difference]: Start difference. First operand 4047 states and 5594 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 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) [2022-07-19 18:00:21,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:21,766 INFO L93 Difference]: Finished difference Result 8084 states and 11174 transitions. [2022-07-19 18:00:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:00:21,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 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 149 [2022-07-19 18:00:21,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:21,785 INFO L225 Difference]: With dead ends: 8084 [2022-07-19 18:00:21,785 INFO L226 Difference]: Without dead ends: 4045 [2022-07-19 18:00:21,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:00:21,793 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 65 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:21,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1341 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2022-07-19 18:00:22,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 4045. [2022-07-19 18:00:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4044 states have (on average 1.3822947576656774) internal successors, (5590), 4044 states have internal predecessors, (5590), 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) [2022-07-19 18:00:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 5590 transitions. [2022-07-19 18:00:22,284 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 5590 transitions. Word has length 149 [2022-07-19 18:00:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:22,285 INFO L495 AbstractCegarLoop]: Abstraction has 4045 states and 5590 transitions. [2022-07-19 18:00:22,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 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) [2022-07-19 18:00:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 5590 transitions. [2022-07-19 18:00:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 18:00:22,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:22,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:22,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:00:22,294 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:22,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:22,295 INFO L85 PathProgramCache]: Analyzing trace with hash 867432798, now seen corresponding path program 1 times [2022-07-19 18:00:22,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:22,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253307241] [2022-07-19 18:00:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:22,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:22,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253307241] [2022-07-19 18:00:22,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253307241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:22,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:22,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:00:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620086796] [2022-07-19 18:00:22,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:22,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:00:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:22,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:00:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:00:22,366 INFO L87 Difference]: Start difference. First operand 4045 states and 5590 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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) [2022-07-19 18:00:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:23,007 INFO L93 Difference]: Finished difference Result 8936 states and 12473 transitions. [2022-07-19 18:00:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:00:23,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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 149 [2022-07-19 18:00:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:23,024 INFO L225 Difference]: With dead ends: 8936 [2022-07-19 18:00:23,024 INFO L226 Difference]: Without dead ends: 5990 [2022-07-19 18:00:23,031 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 [2022-07-19 18:00:23,032 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 361 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:23,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1168 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-07-19 18:00:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5988. [2022-07-19 18:00:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 5987 states have (on average 1.360113579422081) internal successors, (8143), 5987 states have internal predecessors, (8143), 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) [2022-07-19 18:00:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 8143 transitions. [2022-07-19 18:00:23,832 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 8143 transitions. Word has length 149 [2022-07-19 18:00:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:23,832 INFO L495 AbstractCegarLoop]: Abstraction has 5988 states and 8143 transitions. [2022-07-19 18:00:23,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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) [2022-07-19 18:00:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 8143 transitions. [2022-07-19 18:00:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 18:00:23,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:23,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:23,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:00:23,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1284666434, now seen corresponding path program 1 times [2022-07-19 18:00:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127361092] [2022-07-19 18:00:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:23,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127361092] [2022-07-19 18:00:24,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127361092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:24,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:24,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:00:24,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075436151] [2022-07-19 18:00:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:24,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:00:24,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:24,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:00:24,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:00:24,021 INFO L87 Difference]: Start difference. First operand 5988 states and 8143 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-07-19 18:00:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:26,609 INFO L93 Difference]: Finished difference Result 20575 states and 30158 transitions. [2022-07-19 18:00:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 18:00:26,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-07-19 18:00:26,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:26,648 INFO L225 Difference]: With dead ends: 20575 [2022-07-19 18:00:26,648 INFO L226 Difference]: Without dead ends: 16628 [2022-07-19 18:00:26,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-07-19 18:00:26,661 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 3906 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3906 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:26,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3906 Valid, 2019 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 18:00:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16628 states. [2022-07-19 18:00:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16628 to 12216. [2022-07-19 18:00:28,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12216 states, 12215 states have (on average 1.419811706917724) internal successors, (17343), 12215 states have internal predecessors, (17343), 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) [2022-07-19 18:00:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12216 states to 12216 states and 17343 transitions. [2022-07-19 18:00:28,141 INFO L78 Accepts]: Start accepts. Automaton has 12216 states and 17343 transitions. Word has length 152 [2022-07-19 18:00:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:28,141 INFO L495 AbstractCegarLoop]: Abstraction has 12216 states and 17343 transitions. [2022-07-19 18:00:28,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-07-19 18:00:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 12216 states and 17343 transitions. [2022-07-19 18:00:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 18:00:28,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:28,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:28,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:00:28,157 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:28,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1824421472, now seen corresponding path program 1 times [2022-07-19 18:00:28,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:28,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430729053] [2022-07-19 18:00:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:28,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:28,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430729053] [2022-07-19 18:00:28,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430729053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:28,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:28,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:00:28,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094987667] [2022-07-19 18:00:28,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:28,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:00:28,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:00:28,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:00:28,261 INFO L87 Difference]: Start difference. First operand 12216 states and 17343 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2022-07-19 18:00:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:29,618 INFO L93 Difference]: Finished difference Result 20712 states and 30893 transitions. [2022-07-19 18:00:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:00:29,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-07-19 18:00:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:29,653 INFO L225 Difference]: With dead ends: 20712 [2022-07-19 18:00:29,653 INFO L226 Difference]: Without dead ends: 14442 [2022-07-19 18:00:29,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:00:29,667 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 794 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:29,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 797 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:00:29,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14442 states. [2022-07-19 18:00:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14442 to 14440. [2022-07-19 18:00:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14440 states, 14439 states have (on average 1.437980469561604) internal successors, (20763), 14439 states have internal predecessors, (20763), 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) [2022-07-19 18:00:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14440 states to 14440 states and 20763 transitions. [2022-07-19 18:00:31,077 INFO L78 Accepts]: Start accepts. Automaton has 14440 states and 20763 transitions. Word has length 152 [2022-07-19 18:00:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:31,078 INFO L495 AbstractCegarLoop]: Abstraction has 14440 states and 20763 transitions. [2022-07-19 18:00:31,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2022-07-19 18:00:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 14440 states and 20763 transitions. [2022-07-19 18:00:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 18:00:31,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:31,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:00:31,091 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1841812308, now seen corresponding path program 1 times [2022-07-19 18:00:31,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:31,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408213494] [2022-07-19 18:00:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:31,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:31,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:31,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408213494] [2022-07-19 18:00:31,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408213494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:31,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:31,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:00:31,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234164874] [2022-07-19 18:00:31,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:31,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:00:31,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:00:31,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:00:31,180 INFO L87 Difference]: Start difference. First operand 14440 states and 20763 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2022-07-19 18:00:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:33,902 INFO L93 Difference]: Finished difference Result 37181 states and 53601 transitions. [2022-07-19 18:00:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:00:33,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-07-19 18:00:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:33,954 INFO L225 Difference]: With dead ends: 37181 [2022-07-19 18:00:33,955 INFO L226 Difference]: Without dead ends: 23059 [2022-07-19 18:00:33,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:00:33,981 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 848 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:33,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1114 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23059 states. [2022-07-19 18:00:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23059 to 23057. [2022-07-19 18:00:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23057 states, 23056 states have (on average 1.424791811242193) internal successors, (32850), 23056 states have internal predecessors, (32850), 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) [2022-07-19 18:00:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23057 states to 23057 states and 32850 transitions. [2022-07-19 18:00:36,528 INFO L78 Accepts]: Start accepts. Automaton has 23057 states and 32850 transitions. Word has length 152 [2022-07-19 18:00:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:36,528 INFO L495 AbstractCegarLoop]: Abstraction has 23057 states and 32850 transitions. [2022-07-19 18:00:36,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2022-07-19 18:00:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 23057 states and 32850 transitions. [2022-07-19 18:00:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 18:00:36,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:36,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:36,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:00:36,548 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:36,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:36,549 INFO L85 PathProgramCache]: Analyzing trace with hash -8512359, now seen corresponding path program 1 times [2022-07-19 18:00:36,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:36,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430533948] [2022-07-19 18:00:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:36,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:36,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430533948] [2022-07-19 18:00:36,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430533948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:36,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:36,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:00:36,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821943368] [2022-07-19 18:00:36,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:36,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:00:36,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:36,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:00:36,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:00:36,633 INFO L87 Difference]: Start difference. First operand 23057 states and 32850 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2022-07-19 18:00:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:38,780 INFO L93 Difference]: Finished difference Result 36603 states and 52226 transitions. [2022-07-19 18:00:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:00:38,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 154 [2022-07-19 18:00:38,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:38,810 INFO L225 Difference]: With dead ends: 36603 [2022-07-19 18:00:38,811 INFO L226 Difference]: Without dead ends: 18789 [2022-07-19 18:00:38,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:00:38,841 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 53 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:38,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1307 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18789 states. [2022-07-19 18:00:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18789 to 18789. [2022-07-19 18:00:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18789 states, 18788 states have (on average 1.4182989142005535) internal successors, (26647), 18788 states have internal predecessors, (26647), 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) [2022-07-19 18:00:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18789 states to 18789 states and 26647 transitions. [2022-07-19 18:00:41,157 INFO L78 Accepts]: Start accepts. Automaton has 18789 states and 26647 transitions. Word has length 154 [2022-07-19 18:00:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:41,158 INFO L495 AbstractCegarLoop]: Abstraction has 18789 states and 26647 transitions. [2022-07-19 18:00:41,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2022-07-19 18:00:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 18789 states and 26647 transitions. [2022-07-19 18:00:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 18:00:41,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:41,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:41,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:00:41,174 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:41,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1625804197, now seen corresponding path program 1 times [2022-07-19 18:00:41,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:41,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731887953] [2022-07-19 18:00:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:41,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:41,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:41,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731887953] [2022-07-19 18:00:41,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731887953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:41,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:41,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:00:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409501872] [2022-07-19 18:00:41,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:41,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:00:41,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:00:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:00:41,229 INFO L87 Difference]: Start difference. First operand 18789 states and 26647 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-19 18:00:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:45,098 INFO L93 Difference]: Finished difference Result 49849 states and 71779 transitions. [2022-07-19 18:00:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:00:45,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 157 [2022-07-19 18:00:45,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:45,168 INFO L225 Difference]: With dead ends: 49849 [2022-07-19 18:00:45,168 INFO L226 Difference]: Without dead ends: 36351 [2022-07-19 18:00:45,194 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 [2022-07-19 18:00:45,195 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 339 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:45,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 687 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:00:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36351 states. [2022-07-19 18:00:49,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36351 to 36349. [2022-07-19 18:00:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36349 states, 36348 states have (on average 1.4172169032684054) internal successors, (51513), 36348 states have internal predecessors, (51513), 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) [2022-07-19 18:00:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36349 states to 36349 states and 51513 transitions. [2022-07-19 18:00:49,685 INFO L78 Accepts]: Start accepts. Automaton has 36349 states and 51513 transitions. Word has length 157 [2022-07-19 18:00:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:00:49,685 INFO L495 AbstractCegarLoop]: Abstraction has 36349 states and 51513 transitions. [2022-07-19 18:00:49,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-19 18:00:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 36349 states and 51513 transitions. [2022-07-19 18:00:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 18:00:49,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:00:49,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:00:49,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 18:00:49,714 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:00:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:00:49,714 INFO L85 PathProgramCache]: Analyzing trace with hash -235404352, now seen corresponding path program 1 times [2022-07-19 18:00:49,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:00:49,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681386263] [2022-07-19 18:00:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:00:49,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:00:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:00:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:00:49,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:00:49,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681386263] [2022-07-19 18:00:49,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681386263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:00:49,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:00:49,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:00:49,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047074078] [2022-07-19 18:00:49,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:00:49,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:00:49,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:00:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:00:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:00:49,862 INFO L87 Difference]: Start difference. First operand 36349 states and 51513 transitions. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 8 states have internal predecessors, (157), 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) [2022-07-19 18:01:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:01:09,234 INFO L93 Difference]: Finished difference Result 167897 states and 247432 transitions. [2022-07-19 18:01:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 18:01:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 8 states have internal predecessors, (157), 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 157 [2022-07-19 18:01:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:01:09,658 INFO L225 Difference]: With dead ends: 167897 [2022-07-19 18:01:09,658 INFO L226 Difference]: Without dead ends: 137037 [2022-07-19 18:01:09,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-07-19 18:01:09,731 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 3673 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:01:09,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3673 Valid, 1983 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 18:01:09,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137037 states.