./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_opt-floodmax.3.2.ufo.BOUNDED-6.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 a89ee9f7aa9454ab38fa86354119089629ffb03b95267a7d67f4e51e7c7ae615 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:15:11,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:15:11,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:15:11,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:15:11,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:15:11,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:15:11,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:15:11,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:15:11,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:15:11,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:15:11,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:15:11,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:15:11,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:15:11,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:15:11,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:15:11,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:15:11,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:15:11,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:15:11,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:15:11,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:15:11,468 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:15:11,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:15:11,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:15:11,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:15:11,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:15:11,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:15:11,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:15:11,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:15:11,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:15:11,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:15:11,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:15:11,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:15:11,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:15:11,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:15:11,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:15:11,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:15:11,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:15:11,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:15:11,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:15:11,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:15:11,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:15:11,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:15:11,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:15:11,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:15:11,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:15:11,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:15:11,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:15:11,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:15:11,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:15:11,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:15:11,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:15:11,497 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:15:11,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:15:11,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:15:11,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:15:11,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:15:11,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:15:11,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:15:11,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:15:11,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:15:11,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:15:11,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:15:11,499 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:15:11,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:15:11,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:15:11,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:15:11,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:15:11,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:15:11,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:15:11,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:15:11,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:15:11,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:15:11,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:15:11,508 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:15:11,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:15:11,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:15:11,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a89ee9f7aa9454ab38fa86354119089629ffb03b95267a7d67f4e51e7c7ae615 [2022-07-13 19:15:11,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:15:11,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:15:11,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:15:11,705 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:15:11,707 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:15:11,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-13 19:15:11,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c6c9181/3d550096f7b14d15b04bdc9d6951a3b5/FLAGcdc387275 [2022-07-13 19:15:12,140 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:15:12,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-13 19:15:12,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c6c9181/3d550096f7b14d15b04bdc9d6951a3b5/FLAGcdc387275 [2022-07-13 19:15:12,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c6c9181/3d550096f7b14d15b04bdc9d6951a3b5 [2022-07-13 19:15:12,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:15:12,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:15:12,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:15:12,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:15:12,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:15:12,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0142b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12, skipping insertion in model container [2022-07-13 19:15:12,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:15:12,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:15:12,410 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_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[10710,10723] [2022-07-13 19:15:12,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:15:12,476 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:15:12,524 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_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[10710,10723] [2022-07-13 19:15:12,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:15:12,585 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:15:12,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12 WrapperNode [2022-07-13 19:15:12,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:15:12,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:15:12,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:15:12,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:15:12,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,689 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 953 [2022-07-13 19:15:12,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:15:12,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:15:12,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:15:12,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:15:12,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:15:12,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:15:12,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:15:12,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:15:12,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (1/1) ... [2022-07-13 19:15:12,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:15:12,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:15:12,783 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) [2022-07-13 19:15:12,785 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 [2022-07-13 19:15:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:15:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:15:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:15:12,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:15:12,899 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:15:12,900 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:15:13,468 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:15:13,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:15:13,476 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 19:15:13,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:15:13 BoogieIcfgContainer [2022-07-13 19:15:13,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:15:13,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:15:13,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:15:13,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:15:13,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:15:12" (1/3) ... [2022-07-13 19:15:13,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0a7cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:15:13, skipping insertion in model container [2022-07-13 19:15:13,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:15:12" (2/3) ... [2022-07-13 19:15:13,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0a7cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:15:13, skipping insertion in model container [2022-07-13 19:15:13,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:15:13" (3/3) ... [2022-07-13 19:15:13,487 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-13 19:15:13,496 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:15:13,496 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 19:15:13,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:15:13,537 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@6bbc19a9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71f87252 [2022-07-13 19:15:13,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 19:15:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 239 states have (on average 1.7656903765690377) internal successors, (422), 240 states have internal predecessors, (422), 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) [2022-07-13 19:15:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 19:15:13,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:13,548 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] [2022-07-13 19:15:13,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:13,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:13,551 INFO L85 PathProgramCache]: Analyzing trace with hash -574535014, now seen corresponding path program 1 times [2022-07-13 19:15:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:13,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758676046] [2022-07-13 19:15:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:13,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:13,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758676046] [2022-07-13 19:15:13,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758676046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:13,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:13,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:13,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317948362] [2022-07-13 19:15:13,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:13,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:13,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:13,942 INFO L87 Difference]: Start difference. First operand has 241 states, 239 states have (on average 1.7656903765690377) internal successors, (422), 240 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2022-07-13 19:15:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:14,074 INFO L93 Difference]: Finished difference Result 482 states and 831 transitions. [2022-07-13 19:15:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 100 [2022-07-13 19:15:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:14,089 INFO L225 Difference]: With dead ends: 482 [2022-07-13 19:15:14,091 INFO L226 Difference]: Without dead ends: 358 [2022-07-13 19:15:14,093 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 [2022-07-13 19:15:14,098 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 291 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:14,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 659 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:15:14,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-13 19:15:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2022-07-13 19:15:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.5295774647887324) internal successors, (543), 355 states have internal predecessors, (543), 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) [2022-07-13 19:15:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 543 transitions. [2022-07-13 19:15:14,169 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 543 transitions. Word has length 100 [2022-07-13 19:15:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:14,170 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 543 transitions. [2022-07-13 19:15:14,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2022-07-13 19:15:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 543 transitions. [2022-07-13 19:15:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 19:15:14,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:14,173 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] [2022-07-13 19:15:14,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:15:14,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1640633924, now seen corresponding path program 1 times [2022-07-13 19:15:14,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:14,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024951270] [2022-07-13 19:15:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:14,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:14,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024951270] [2022-07-13 19:15:14,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024951270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:14,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:14,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:15:14,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394127530] [2022-07-13 19:15:14,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:15:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:15:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:15:14,386 INFO L87 Difference]: Start difference. First operand 356 states and 543 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2022-07-13 19:15:14,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:14,506 INFO L93 Difference]: Finished difference Result 1034 states and 1572 transitions. [2022-07-13 19:15:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:15:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 100 [2022-07-13 19:15:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:14,511 INFO L225 Difference]: With dead ends: 1034 [2022-07-13 19:15:14,511 INFO L226 Difference]: Without dead ends: 687 [2022-07-13 19:15:14,517 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 [2022-07-13 19:15:14,518 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 711 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:14,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 904 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:14,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-07-13 19:15:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 685. [2022-07-13 19:15:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 1.5116959064327486) internal successors, (1034), 684 states have internal predecessors, (1034), 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) [2022-07-13 19:15:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1034 transitions. [2022-07-13 19:15:14,578 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1034 transitions. Word has length 100 [2022-07-13 19:15:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:14,580 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1034 transitions. [2022-07-13 19:15:14,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2022-07-13 19:15:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1034 transitions. [2022-07-13 19:15:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 19:15:14,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:14,586 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] [2022-07-13 19:15:14,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:15:14,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:14,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:14,590 INFO L85 PathProgramCache]: Analyzing trace with hash -309110568, now seen corresponding path program 1 times [2022-07-13 19:15:14,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:14,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841041632] [2022-07-13 19:15:14,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:14,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:14,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:14,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841041632] [2022-07-13 19:15:14,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841041632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:14,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:14,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:14,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960879023] [2022-07-13 19:15:14,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:14,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:14,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:14,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:14,672 INFO L87 Difference]: Start difference. First operand 685 states and 1034 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2022-07-13 19:15:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:14,756 INFO L93 Difference]: Finished difference Result 2017 states and 3040 transitions. [2022-07-13 19:15:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:14,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2022-07-13 19:15:14,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:14,761 INFO L225 Difference]: With dead ends: 2017 [2022-07-13 19:15:14,761 INFO L226 Difference]: Without dead ends: 1360 [2022-07-13 19:15:14,763 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 [2022-07-13 19:15:14,767 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 343 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1039 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 [2022-07-13 19:15:14,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1039 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:14,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2022-07-13 19:15:14,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 687. [2022-07-13 19:15:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.510204081632653) internal successors, (1036), 686 states have internal predecessors, (1036), 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) [2022-07-13 19:15:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1036 transitions. [2022-07-13 19:15:14,824 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1036 transitions. Word has length 101 [2022-07-13 19:15:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:14,824 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1036 transitions. [2022-07-13 19:15:14,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2022-07-13 19:15:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1036 transitions. [2022-07-13 19:15:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 19:15:14,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:14,825 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] [2022-07-13 19:15:14,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:15:14,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:14,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:14,828 INFO L85 PathProgramCache]: Analyzing trace with hash 923754978, now seen corresponding path program 1 times [2022-07-13 19:15:14,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:14,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864135141] [2022-07-13 19:15:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:14,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:14,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:14,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864135141] [2022-07-13 19:15:14,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864135141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:14,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:14,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168674561] [2022-07-13 19:15:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:14,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:14,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:14,899 INFO L87 Difference]: Start difference. First operand 687 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-07-13 19:15:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:14,980 INFO L93 Difference]: Finished difference Result 1818 states and 2761 transitions. [2022-07-13 19:15:14,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:14,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-07-13 19:15:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:14,986 INFO L225 Difference]: With dead ends: 1818 [2022-07-13 19:15:14,986 INFO L226 Difference]: Without dead ends: 1326 [2022-07-13 19:15:14,988 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 [2022-07-13 19:15:14,992 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 282 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:14,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 992 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-07-13 19:15:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1324. [2022-07-13 19:15:15,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 1.4958427815570672) internal successors, (1979), 1323 states have internal predecessors, (1979), 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) [2022-07-13 19:15:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1979 transitions. [2022-07-13 19:15:15,078 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1979 transitions. Word has length 102 [2022-07-13 19:15:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:15,080 INFO L495 AbstractCegarLoop]: Abstraction has 1324 states and 1979 transitions. [2022-07-13 19:15:15,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-07-13 19:15:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1979 transitions. [2022-07-13 19:15:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 19:15:15,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:15,082 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] [2022-07-13 19:15:15,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:15:15,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1935849921, now seen corresponding path program 1 times [2022-07-13 19:15:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:15,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209887043] [2022-07-13 19:15:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:15,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:15,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:15,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209887043] [2022-07-13 19:15:15,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209887043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:15,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:15,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:15:15,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209466562] [2022-07-13 19:15:15,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:15,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:15:15,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:15:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:15:15,185 INFO L87 Difference]: Start difference. First operand 1324 states and 1979 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:15:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:15,363 INFO L93 Difference]: Finished difference Result 3685 states and 5516 transitions. [2022-07-13 19:15:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:15:15,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 102 [2022-07-13 19:15:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:15,371 INFO L225 Difference]: With dead ends: 3685 [2022-07-13 19:15:15,371 INFO L226 Difference]: Without dead ends: 2375 [2022-07-13 19:15:15,372 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 [2022-07-13 19:15:15,373 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1046 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:15,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 895 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:15,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2022-07-13 19:15:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2373. [2022-07-13 19:15:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2372 states have (on average 1.4852445193929174) internal successors, (3523), 2372 states have internal predecessors, (3523), 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) [2022-07-13 19:15:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3523 transitions. [2022-07-13 19:15:15,529 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3523 transitions. Word has length 102 [2022-07-13 19:15:15,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:15,529 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 3523 transitions. [2022-07-13 19:15:15,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:15:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3523 transitions. [2022-07-13 19:15:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 19:15:15,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:15,531 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] [2022-07-13 19:15:15,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:15:15,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash -24067963, now seen corresponding path program 1 times [2022-07-13 19:15:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:15,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586216165] [2022-07-13 19:15:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:15,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:15,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586216165] [2022-07-13 19:15:15,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586216165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:15,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:15,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:15:15,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411172995] [2022-07-13 19:15:15,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:15,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:15:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:15,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:15:15,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:15:15,585 INFO L87 Difference]: Start difference. First operand 2373 states and 3523 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2022-07-13 19:15:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:15,868 INFO L93 Difference]: Finished difference Result 6872 states and 10160 transitions. [2022-07-13 19:15:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:15:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 102 [2022-07-13 19:15:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:15,880 INFO L225 Difference]: With dead ends: 6872 [2022-07-13 19:15:15,880 INFO L226 Difference]: Without dead ends: 4555 [2022-07-13 19:15:15,882 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 [2022-07-13 19:15:15,883 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 700 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:15,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 880 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2022-07-13 19:15:16,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4553. [2022-07-13 19:15:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 1.4650702987697715) internal successors, (6669), 4552 states have internal predecessors, (6669), 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) [2022-07-13 19:15:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6669 transitions. [2022-07-13 19:15:16,199 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6669 transitions. Word has length 102 [2022-07-13 19:15:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:16,200 INFO L495 AbstractCegarLoop]: Abstraction has 4553 states and 6669 transitions. [2022-07-13 19:15:16,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2022-07-13 19:15:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6669 transitions. [2022-07-13 19:15:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 19:15:16,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:16,204 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] [2022-07-13 19:15:16,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:15:16,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:16,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:16,205 INFO L85 PathProgramCache]: Analyzing trace with hash 535900793, now seen corresponding path program 1 times [2022-07-13 19:15:16,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:16,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333306585] [2022-07-13 19:15:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:16,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:16,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:16,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333306585] [2022-07-13 19:15:16,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333306585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:16,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:16,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:16,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402654434] [2022-07-13 19:15:16,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:16,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:16,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:16,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:16,231 INFO L87 Difference]: Start difference. First operand 4553 states and 6669 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-07-13 19:15:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:16,715 INFO L93 Difference]: Finished difference Result 13507 states and 19774 transitions. [2022-07-13 19:15:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:16,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2022-07-13 19:15:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:16,738 INFO L225 Difference]: With dead ends: 13507 [2022-07-13 19:15:16,738 INFO L226 Difference]: Without dead ends: 9045 [2022-07-13 19:15:16,742 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 [2022-07-13 19:15:16,742 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 329 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 831 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 [2022-07-13 19:15:16,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 831 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2022-07-13 19:15:17,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 4563. [2022-07-13 19:15:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 1.464050854888207) internal successors, (6679), 4562 states have internal predecessors, (6679), 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) [2022-07-13 19:15:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 6679 transitions. [2022-07-13 19:15:17,096 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 6679 transitions. Word has length 103 [2022-07-13 19:15:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:17,096 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 6679 transitions. [2022-07-13 19:15:17,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-07-13 19:15:17,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 6679 transitions. [2022-07-13 19:15:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 19:15:17,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:17,100 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] [2022-07-13 19:15:17,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:15:17,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:17,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:17,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1648131910, now seen corresponding path program 1 times [2022-07-13 19:15:17,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:17,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322853314] [2022-07-13 19:15:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:17,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:17,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:17,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322853314] [2022-07-13 19:15:17,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322853314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:17,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:17,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:15:17,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899541814] [2022-07-13 19:15:17,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:17,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:15:17,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:15:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:15:17,163 INFO L87 Difference]: Start difference. First operand 4563 states and 6679 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2022-07-13 19:15:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:17,795 INFO L93 Difference]: Finished difference Result 12401 states and 18058 transitions. [2022-07-13 19:15:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:15:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 104 [2022-07-13 19:15:17,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:17,814 INFO L225 Difference]: With dead ends: 12401 [2022-07-13 19:15:17,814 INFO L226 Difference]: Without dead ends: 7939 [2022-07-13 19:15:17,819 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 [2022-07-13 19:15:17,819 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 698 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:17,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 865 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:17,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7939 states. [2022-07-13 19:15:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7939 to 7937. [2022-07-13 19:15:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 7936 states have (on average 1.4373739919354838) internal successors, (11407), 7936 states have internal predecessors, (11407), 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) [2022-07-13 19:15:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 11407 transitions. [2022-07-13 19:15:18,404 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 11407 transitions. Word has length 104 [2022-07-13 19:15:18,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:18,404 INFO L495 AbstractCegarLoop]: Abstraction has 7937 states and 11407 transitions. [2022-07-13 19:15:18,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2022-07-13 19:15:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 11407 transitions. [2022-07-13 19:15:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 19:15:18,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:18,410 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] [2022-07-13 19:15:18,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:15:18,411 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:18,411 INFO L85 PathProgramCache]: Analyzing trace with hash 67303578, now seen corresponding path program 1 times [2022-07-13 19:15:18,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:18,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559300384] [2022-07-13 19:15:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:18,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:18,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:18,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559300384] [2022-07-13 19:15:18,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559300384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:18,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:18,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:18,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217098577] [2022-07-13 19:15:18,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:18,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:18,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:18,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:18,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:18,436 INFO L87 Difference]: Start difference. First operand 7937 states and 11407 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 19:15:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:19,492 INFO L93 Difference]: Finished difference Result 22585 states and 32659 transitions. [2022-07-13 19:15:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:19,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-07-13 19:15:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:19,516 INFO L225 Difference]: With dead ends: 22585 [2022-07-13 19:15:19,517 INFO L226 Difference]: Without dead ends: 15591 [2022-07-13 19:15:19,524 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 [2022-07-13 19:15:19,524 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 315 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1011 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 [2022-07-13 19:15:19,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1011 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15591 states. [2022-07-13 19:15:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15591 to 7957. [2022-07-13 19:15:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7957 states, 7956 states have (on average 1.4362745098039216) internal successors, (11427), 7956 states have internal predecessors, (11427), 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) [2022-07-13 19:15:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7957 states to 7957 states and 11427 transitions. [2022-07-13 19:15:20,043 INFO L78 Accepts]: Start accepts. Automaton has 7957 states and 11427 transitions. Word has length 105 [2022-07-13 19:15:20,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:20,043 INFO L495 AbstractCegarLoop]: Abstraction has 7957 states and 11427 transitions. [2022-07-13 19:15:20,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 19:15:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7957 states and 11427 transitions. [2022-07-13 19:15:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 19:15:20,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:20,049 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] [2022-07-13 19:15:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:15:20,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash -774657911, now seen corresponding path program 1 times [2022-07-13 19:15:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:20,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643029352] [2022-07-13 19:15:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:20,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:20,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643029352] [2022-07-13 19:15:20,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643029352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:20,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:20,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:15:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110622504] [2022-07-13 19:15:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:20,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:15:20,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:15:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:15:20,116 INFO L87 Difference]: Start difference. First operand 7957 states and 11427 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2022-07-13 19:15:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:20,692 INFO L93 Difference]: Finished difference Result 16601 states and 23649 transitions. [2022-07-13 19:15:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:15:20,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 106 [2022-07-13 19:15:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:20,707 INFO L225 Difference]: With dead ends: 16601 [2022-07-13 19:15:20,707 INFO L226 Difference]: Without dead ends: 8869 [2022-07-13 19:15:20,715 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 [2022-07-13 19:15:20,716 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 637 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:20,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1183 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2022-07-13 19:15:21,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8489. [2022-07-13 19:15:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8489 states, 8488 states have (on average 1.4170593779453347) internal successors, (12028), 8488 states have internal predecessors, (12028), 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) [2022-07-13 19:15:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8489 states to 8489 states and 12028 transitions. [2022-07-13 19:15:21,295 INFO L78 Accepts]: Start accepts. Automaton has 8489 states and 12028 transitions. Word has length 106 [2022-07-13 19:15:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:21,296 INFO L495 AbstractCegarLoop]: Abstraction has 8489 states and 12028 transitions. [2022-07-13 19:15:21,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2022-07-13 19:15:21,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8489 states and 12028 transitions. [2022-07-13 19:15:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 19:15:21,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:21,302 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] [2022-07-13 19:15:21,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:15:21,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:21,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1612747399, now seen corresponding path program 1 times [2022-07-13 19:15:21,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:21,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893136711] [2022-07-13 19:15:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:21,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:21,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893136711] [2022-07-13 19:15:21,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893136711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:21,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:21,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:15:21,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308480483] [2022-07-13 19:15:21,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:21,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:15:21,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:21,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:15:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:15:21,358 INFO L87 Difference]: Start difference. First operand 8489 states and 12028 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2022-07-13 19:15:21,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:21,792 INFO L93 Difference]: Finished difference Result 13782 states and 19555 transitions. [2022-07-13 19:15:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:15:21,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2022-07-13 19:15:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:21,801 INFO L225 Difference]: With dead ends: 13782 [2022-07-13 19:15:21,801 INFO L226 Difference]: Without dead ends: 5474 [2022-07-13 19:15:21,809 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 [2022-07-13 19:15:21,810 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 65 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1090 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 [2022-07-13 19:15:21,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1090 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2022-07-13 19:15:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 5474. [2022-07-13 19:15:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5474 states, 5473 states have (on average 1.4129362324136672) internal successors, (7733), 5473 states have internal predecessors, (7733), 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) [2022-07-13 19:15:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5474 states to 5474 states and 7733 transitions. [2022-07-13 19:15:22,288 INFO L78 Accepts]: Start accepts. Automaton has 5474 states and 7733 transitions. Word has length 106 [2022-07-13 19:15:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:22,288 INFO L495 AbstractCegarLoop]: Abstraction has 5474 states and 7733 transitions. [2022-07-13 19:15:22,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2022-07-13 19:15:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5474 states and 7733 transitions. [2022-07-13 19:15:22,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 19:15:22,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:22,297 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] [2022-07-13 19:15:22,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:15:22,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:22,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:22,297 INFO L85 PathProgramCache]: Analyzing trace with hash 542019190, now seen corresponding path program 1 times [2022-07-13 19:15:22,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:22,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182073489] [2022-07-13 19:15:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:22,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:22,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:22,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182073489] [2022-07-13 19:15:22,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182073489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:22,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:22,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:22,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403349411] [2022-07-13 19:15:22,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:22,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:22,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:22,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:22,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:22,327 INFO L87 Difference]: Start difference. First operand 5474 states and 7733 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:23,043 INFO L93 Difference]: Finished difference Result 12373 states and 18263 transitions. [2022-07-13 19:15:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:23,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-13 19:15:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:23,053 INFO L225 Difference]: With dead ends: 12373 [2022-07-13 19:15:23,054 INFO L226 Difference]: Without dead ends: 7865 [2022-07-13 19:15:23,057 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 [2022-07-13 19:15:23,058 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 225 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:23,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 710 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2022-07-13 19:15:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 7718. [2022-07-13 19:15:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7718 states, 7717 states have (on average 1.4665025268886873) internal successors, (11317), 7717 states have internal predecessors, (11317), 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) [2022-07-13 19:15:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7718 states to 7718 states and 11317 transitions. [2022-07-13 19:15:23,603 INFO L78 Accepts]: Start accepts. Automaton has 7718 states and 11317 transitions. Word has length 108 [2022-07-13 19:15:23,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:23,603 INFO L495 AbstractCegarLoop]: Abstraction has 7718 states and 11317 transitions. [2022-07-13 19:15:23,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:23,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7718 states and 11317 transitions. [2022-07-13 19:15:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 19:15:23,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:23,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:15:23,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 19:15:23,608 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:23,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:23,608 INFO L85 PathProgramCache]: Analyzing trace with hash 399836338, now seen corresponding path program 1 times [2022-07-13 19:15:23,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:23,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278632482] [2022-07-13 19:15:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:23,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:23,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278632482] [2022-07-13 19:15:23,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278632482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:23,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:23,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:15:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678408326] [2022-07-13 19:15:23,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:23,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:15:23,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:23,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:15:23,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:15:23,660 INFO L87 Difference]: Start difference. First operand 7718 states and 11317 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:24,267 INFO L93 Difference]: Finished difference Result 13662 states and 20105 transitions. [2022-07-13 19:15:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:15:24,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-13 19:15:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:24,278 INFO L225 Difference]: With dead ends: 13662 [2022-07-13 19:15:24,278 INFO L226 Difference]: Without dead ends: 7718 [2022-07-13 19:15:24,284 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 [2022-07-13 19:15:24,284 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 53 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1072 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 [2022-07-13 19:15:24,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1072 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2022-07-13 19:15:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7718. [2022-07-13 19:15:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7718 states, 7717 states have (on average 1.4663729428534404) internal successors, (11316), 7717 states have internal predecessors, (11316), 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) [2022-07-13 19:15:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7718 states to 7718 states and 11316 transitions. [2022-07-13 19:15:24,873 INFO L78 Accepts]: Start accepts. Automaton has 7718 states and 11316 transitions. Word has length 111 [2022-07-13 19:15:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:24,874 INFO L495 AbstractCegarLoop]: Abstraction has 7718 states and 11316 transitions. [2022-07-13 19:15:24,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 7718 states and 11316 transitions. [2022-07-13 19:15:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 19:15:24,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:24,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:15:24,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 19:15:24,878 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash 222174127, now seen corresponding path program 1 times [2022-07-13 19:15:24,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:24,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764674316] [2022-07-13 19:15:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:24,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:24,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764674316] [2022-07-13 19:15:24,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764674316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:24,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:24,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138643197] [2022-07-13 19:15:24,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:24,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:24,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:24,911 INFO L87 Difference]: Start difference. First operand 7718 states and 11316 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:25,828 INFO L93 Difference]: Finished difference Result 17889 states and 26672 transitions. [2022-07-13 19:15:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:25,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-13 19:15:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:25,840 INFO L225 Difference]: With dead ends: 17889 [2022-07-13 19:15:25,840 INFO L226 Difference]: Without dead ends: 11669 [2022-07-13 19:15:25,867 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 [2022-07-13 19:15:25,868 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 272 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:25,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 954 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11669 states. [2022-07-13 19:15:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11669 to 11667. [2022-07-13 19:15:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11667 states, 11666 states have (on average 1.4543973941368078) internal successors, (16967), 11666 states have internal predecessors, (16967), 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) [2022-07-13 19:15:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11667 states to 11667 states and 16967 transitions. [2022-07-13 19:15:26,785 INFO L78 Accepts]: Start accepts. Automaton has 11667 states and 16967 transitions. Word has length 111 [2022-07-13 19:15:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:26,802 INFO L495 AbstractCegarLoop]: Abstraction has 11667 states and 16967 transitions. [2022-07-13 19:15:26,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 11667 states and 16967 transitions. [2022-07-13 19:15:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:15:26,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:26,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:15:26,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 19:15:26,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2104835304, now seen corresponding path program 1 times [2022-07-13 19:15:26,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:26,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112367477] [2022-07-13 19:15:26,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:26,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:26,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112367477] [2022-07-13 19:15:26,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112367477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:26,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:26,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637490952] [2022-07-13 19:15:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:26,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:26,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:26,852 INFO L87 Difference]: Start difference. First operand 11667 states and 16967 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:28,589 INFO L93 Difference]: Finished difference Result 25774 states and 38615 transitions. [2022-07-13 19:15:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:28,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-07-13 19:15:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:28,612 INFO L225 Difference]: With dead ends: 25774 [2022-07-13 19:15:28,612 INFO L226 Difference]: Without dead ends: 17415 [2022-07-13 19:15:28,623 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 [2022-07-13 19:15:28,624 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 233 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:28,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 683 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:28,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2022-07-13 19:15:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17001. [2022-07-13 19:15:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17001 states, 17000 states have (on average 1.488705882352941) internal successors, (25308), 17000 states have internal predecessors, (25308), 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) [2022-07-13 19:15:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17001 states to 17001 states and 25308 transitions. [2022-07-13 19:15:30,100 INFO L78 Accepts]: Start accepts. Automaton has 17001 states and 25308 transitions. Word has length 113 [2022-07-13 19:15:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:30,100 INFO L495 AbstractCegarLoop]: Abstraction has 17001 states and 25308 transitions. [2022-07-13 19:15:30,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 17001 states and 25308 transitions. [2022-07-13 19:15:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:15:30,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:30,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:15:30,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 19:15:30,106 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:30,107 INFO L85 PathProgramCache]: Analyzing trace with hash 877166952, now seen corresponding path program 1 times [2022-07-13 19:15:30,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:30,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926974694] [2022-07-13 19:15:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:30,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:30,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:30,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926974694] [2022-07-13 19:15:30,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926974694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:30,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:30,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:15:30,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914060736] [2022-07-13 19:15:30,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:30,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:15:30,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:15:30,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:15:30,135 INFO L87 Difference]: Start difference. First operand 17001 states and 25308 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:32,363 INFO L93 Difference]: Finished difference Result 39742 states and 60424 transitions. [2022-07-13 19:15:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:15:32,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-07-13 19:15:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:32,402 INFO L225 Difference]: With dead ends: 39742 [2022-07-13 19:15:32,402 INFO L226 Difference]: Without dead ends: 26591 [2022-07-13 19:15:32,416 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 [2022-07-13 19:15:32,418 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 225 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:32,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 691 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:32,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26591 states. [2022-07-13 19:15:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26591 to 25829. [2022-07-13 19:15:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25829 states, 25828 states have (on average 1.5125445253213567) internal successors, (39066), 25828 states have internal predecessors, (39066), 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) [2022-07-13 19:15:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25829 states to 25829 states and 39066 transitions. [2022-07-13 19:15:34,750 INFO L78 Accepts]: Start accepts. Automaton has 25829 states and 39066 transitions. Word has length 113 [2022-07-13 19:15:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:34,751 INFO L495 AbstractCegarLoop]: Abstraction has 25829 states and 39066 transitions. [2022-07-13 19:15:34,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 25829 states and 39066 transitions. [2022-07-13 19:15:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 19:15:34,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:34,756 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] [2022-07-13 19:15:34,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 19:15:34,756 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1246493587, now seen corresponding path program 1 times [2022-07-13 19:15:34,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:34,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804788262] [2022-07-13 19:15:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:34,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:34,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804788262] [2022-07-13 19:15:34,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804788262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:34,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:34,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:15:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846318868] [2022-07-13 19:15:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:34,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:15:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:15:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:15:34,811 INFO L87 Difference]: Start difference. First operand 25829 states and 39066 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:37,103 INFO L93 Difference]: Finished difference Result 48550 states and 73486 transitions. [2022-07-13 19:15:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:15:37,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-07-13 19:15:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:37,136 INFO L225 Difference]: With dead ends: 48550 [2022-07-13 19:15:37,136 INFO L226 Difference]: Without dead ends: 22779 [2022-07-13 19:15:37,161 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 [2022-07-13 19:15:37,162 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 43 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1047 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 [2022-07-13 19:15:37,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1047 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22779 states. [2022-07-13 19:15:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22779 to 22779. [2022-07-13 19:15:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22779 states, 22778 states have (on average 1.5143120554921417) internal successors, (34493), 22778 states have internal predecessors, (34493), 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) [2022-07-13 19:15:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22779 states to 22779 states and 34493 transitions. [2022-07-13 19:15:39,594 INFO L78 Accepts]: Start accepts. Automaton has 22779 states and 34493 transitions. Word has length 114 [2022-07-13 19:15:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:39,595 INFO L495 AbstractCegarLoop]: Abstraction has 22779 states and 34493 transitions. [2022-07-13 19:15:39,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:39,595 INFO L276 IsEmpty]: Start isEmpty. Operand 22779 states and 34493 transitions. [2022-07-13 19:15:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 19:15:39,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:39,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:15:39,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 19:15:39,600 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:39,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:39,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1678304243, now seen corresponding path program 1 times [2022-07-13 19:15:39,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:39,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593419005] [2022-07-13 19:15:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:39,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:39,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593419005] [2022-07-13 19:15:39,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593419005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:39,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:39,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:15:39,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91507725] [2022-07-13 19:15:39,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:39,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:15:39,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:15:39,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:15:39,718 INFO L87 Difference]: Start difference. First operand 22779 states and 34493 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:43,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:43,754 INFO L93 Difference]: Finished difference Result 61935 states and 95911 transitions. [2022-07-13 19:15:43,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 19:15:43,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-13 19:15:43,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:43,819 INFO L225 Difference]: With dead ends: 61935 [2022-07-13 19:15:43,819 INFO L226 Difference]: Without dead ends: 42357 [2022-07-13 19:15:43,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:15:43,842 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 750 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:43,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 892 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:15:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42357 states. [2022-07-13 19:15:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42357 to 42271. [2022-07-13 19:15:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42271 states, 42270 states have (on average 1.516087059380175) internal successors, (64085), 42270 states have internal predecessors, (64085), 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) [2022-07-13 19:15:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42271 states to 42271 states and 64085 transitions. [2022-07-13 19:15:48,164 INFO L78 Accepts]: Start accepts. Automaton has 42271 states and 64085 transitions. Word has length 117 [2022-07-13 19:15:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:48,164 INFO L495 AbstractCegarLoop]: Abstraction has 42271 states and 64085 transitions. [2022-07-13 19:15:48,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:48,164 INFO L276 IsEmpty]: Start isEmpty. Operand 42271 states and 64085 transitions. [2022-07-13 19:15:48,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 19:15:48,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:48,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:15:48,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 19:15:48,169 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:48,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:48,169 INFO L85 PathProgramCache]: Analyzing trace with hash 151874845, now seen corresponding path program 1 times [2022-07-13 19:15:48,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:48,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012206764] [2022-07-13 19:15:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:48,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:48,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012206764] [2022-07-13 19:15:48,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012206764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:48,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:48,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:15:48,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272570201] [2022-07-13 19:15:48,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:48,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:15:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:15:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:15:48,207 INFO L87 Difference]: Start difference. First operand 42271 states and 64085 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:15:52,932 INFO L93 Difference]: Finished difference Result 80372 states and 122223 transitions. [2022-07-13 19:15:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 19:15:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-13 19:15:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:15:52,997 INFO L225 Difference]: With dead ends: 80372 [2022-07-13 19:15:52,997 INFO L226 Difference]: Without dead ends: 42271 [2022-07-13 19:15:53,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:15:53,024 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 839 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:15:53,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 351 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:15:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42271 states. [2022-07-13 19:15:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42271 to 42271. [2022-07-13 19:15:57,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42271 states, 42270 states have (on average 1.504613200851668) internal successors, (63600), 42270 states have internal predecessors, (63600), 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) [2022-07-13 19:15:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42271 states to 42271 states and 63600 transitions. [2022-07-13 19:15:58,028 INFO L78 Accepts]: Start accepts. Automaton has 42271 states and 63600 transitions. Word has length 117 [2022-07-13 19:15:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:15:58,028 INFO L495 AbstractCegarLoop]: Abstraction has 42271 states and 63600 transitions. [2022-07-13 19:15:58,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:15:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 42271 states and 63600 transitions. [2022-07-13 19:15:58,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 19:15:58,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:15:58,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:15:58,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 19:15:58,034 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:15:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:15:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash -219065278, now seen corresponding path program 1 times [2022-07-13 19:15:58,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:15:58,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853085152] [2022-07-13 19:15:58,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:15:58,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:15:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:15:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:15:58,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:15:58,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853085152] [2022-07-13 19:15:58,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853085152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:15:58,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:15:58,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 19:15:58,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630844410] [2022-07-13 19:15:58,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:15:58,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 19:15:58,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:15:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 19:15:58,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:15:58,145 INFO L87 Difference]: Start difference. First operand 42271 states and 63600 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:16:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:16:03,153 INFO L93 Difference]: Finished difference Result 81889 states and 124136 transitions. [2022-07-13 19:16:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:16:03,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-13 19:16:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:16:03,220 INFO L225 Difference]: With dead ends: 81889 [2022-07-13 19:16:03,220 INFO L226 Difference]: Without dead ends: 42273 [2022-07-13 19:16:03,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 19:16:03,276 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 599 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:16:03,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 986 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:16:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42273 states. [2022-07-13 19:16:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42273 to 42271. [2022-07-13 19:16:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42271 states, 42270 states have (on average 1.5000709723207948) internal successors, (63408), 42270 states have internal predecessors, (63408), 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) [2022-07-13 19:16:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42271 states to 42271 states and 63408 transitions. [2022-07-13 19:16:08,727 INFO L78 Accepts]: Start accepts. Automaton has 42271 states and 63408 transitions. Word has length 117 [2022-07-13 19:16:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:16:08,728 INFO L495 AbstractCegarLoop]: Abstraction has 42271 states and 63408 transitions. [2022-07-13 19:16:08,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:16:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 42271 states and 63408 transitions. [2022-07-13 19:16:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 19:16:08,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:16:08,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:16:08,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 19:16:08,732 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:16:08,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:16:08,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2049893983, now seen corresponding path program 1 times [2022-07-13 19:16:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:16:08,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812644022] [2022-07-13 19:16:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:16:08,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:16:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:16:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:16:08,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:16:08,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812644022] [2022-07-13 19:16:08,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812644022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:16:08,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:16:08,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:16:08,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822578137] [2022-07-13 19:16:08,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:16:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:16:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:16:08,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:16:08,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:16:08,798 INFO L87 Difference]: Start difference. First operand 42271 states and 63408 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)