./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.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/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.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 44a148d9de1532cb566543d7eae5d77d4b586265aeb908201e957f15a6f85f92 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:52:11,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:52:11,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:52:11,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:52:11,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:52:11,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:52:11,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:52:11,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:52:11,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:52:11,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:52:11,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:52:11,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:52:11,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:52:11,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:52:11,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:52:11,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:52:11,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:52:11,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:52:11,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:52:11,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:52:11,374 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:52:11,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:52:11,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:52:11,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:52:11,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:52:11,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:52:11,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:52:11,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:52:11,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:52:11,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:52:11,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:52:11,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:52:11,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:52:11,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:52:11,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:52:11,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:52:11,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:52:11,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:52:11,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:52:11,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:52:11,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:52:11,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:52:11,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:52:11,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:52:11,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:52:11,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:52:11,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:52:11,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:52:11,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:52:11,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:52:11,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:52:11,439 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:52:11,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:52:11,440 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:52:11,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:52:11,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:52:11,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:52:11,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:52:11,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:52:11,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:52:11,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:52:11,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:52:11,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:52:11,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:52:11,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:52:11,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:52:11,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:52:11,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:52:11,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:52:11,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:52:11,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:52:11,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:52:11,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:52:11,444 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:52:11,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:52:11,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:52:11,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a148d9de1532cb566543d7eae5d77d4b586265aeb908201e957f15a6f85f92 [2022-07-13 20:52:11,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:52:11,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:52:11,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:52:11,721 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:52:11,721 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:52:11,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 20:52:11,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832712272/5ffbe9df4cb949c69de338adffefbe92/FLAGeb39aa297 [2022-07-13 20:52:12,530 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:52:12,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 20:52:12,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832712272/5ffbe9df4cb949c69de338adffefbe92/FLAGeb39aa297 [2022-07-13 20:52:12,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832712272/5ffbe9df4cb949c69de338adffefbe92 [2022-07-13 20:52:12,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:52:12,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:52:12,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:52:12,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:52:12,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:52:12,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:52:12" (1/1) ... [2022-07-13 20:52:12,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ca87f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:12, skipping insertion in model container [2022-07-13 20:52:12,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:52:12" (1/1) ... [2022-07-13 20:52:12,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:52:12,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:52:13,020 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/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c[11705,11718] [2022-07-13 20:52:13,099 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/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c[19453,19466] [2022-07-13 20:52:13,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:52:13,743 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:52:13,780 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/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c[11705,11718] [2022-07-13 20:52:13,790 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/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c[19453,19466] [2022-07-13 20:52:14,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:52:14,160 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:52:14,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14 WrapperNode [2022-07-13 20:52:14,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:52:14,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:52:14,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:52:14,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:52:14,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:14,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:14,585 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5089 [2022-07-13 20:52:14,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:52:14,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:52:14,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:52:14,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:52:14,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:14,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:14,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:14,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:14,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:14,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:14,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:15,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:52:15,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:52:15,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:52:15,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:52:15,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (1/1) ... [2022-07-13 20:52:15,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:52:15,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:52:15,097 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 20:52:15,148 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 20:52:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:52:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:52:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:52:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:52:15,339 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:52:15,341 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:52:18,906 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:52:18,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:52:18,926 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 20:52:18,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:52:18 BoogieIcfgContainer [2022-07-13 20:52:18,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:52:18,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:52:18,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:52:18,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:52:18,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:52:12" (1/3) ... [2022-07-13 20:52:18,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f6e749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:52:18, skipping insertion in model container [2022-07-13 20:52:18,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:52:14" (2/3) ... [2022-07-13 20:52:18,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f6e749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:52:18, skipping insertion in model container [2022-07-13 20:52:18,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:52:18" (3/3) ... [2022-07-13 20:52:18,939 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 20:52:18,952 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:52:18,952 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:52:19,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:52:19,017 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@17bc91f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79d0e448 [2022-07-13 20:52:19,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:52:19,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 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 20:52:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 20:52:19,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:19,034 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] [2022-07-13 20:52:19,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1083425478, now seen corresponding path program 1 times [2022-07-13 20:52:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:19,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503583945] [2022-07-13 20:52:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:19,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:19,255 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 20:52:19,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:19,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503583945] [2022-07-13 20:52:19,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503583945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:19,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:19,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:52:19,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357210182] [2022-07-13 20:52:19,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:19,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:52:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:19,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:52:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:52:19,304 INFO L87 Difference]: Start difference. First operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 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 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 20:52:19,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:19,382 INFO L93 Difference]: Finished difference Result 1783 states and 3378 transitions. [2022-07-13 20:52:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:52:19,384 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-07-13 20:52:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:19,406 INFO L225 Difference]: With dead ends: 1783 [2022-07-13 20:52:19,406 INFO L226 Difference]: Without dead ends: 845 [2022-07-13 20:52:19,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:52:19,419 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:19,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-07-13 20:52:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2022-07-13 20:52:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8884934756820877) internal successors, (1592), 844 states have internal predecessors, (1592), 0 states have call successors, (0), 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 20:52:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1592 transitions. [2022-07-13 20:52:19,507 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1592 transitions. Word has length 34 [2022-07-13 20:52:19,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:19,507 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1592 transitions. [2022-07-13 20:52:19,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 20:52:19,508 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1592 transitions. [2022-07-13 20:52:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 20:52:19,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:19,513 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] [2022-07-13 20:52:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:52:19,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1592898568, now seen corresponding path program 1 times [2022-07-13 20:52:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:19,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406284391] [2022-07-13 20:52:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:19,618 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 20:52:19,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:19,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406284391] [2022-07-13 20:52:19,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406284391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:19,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:19,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:52:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602744514] [2022-07-13 20:52:19,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:19,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:52:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:52:19,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:52:19,629 INFO L87 Difference]: Start difference. First operand 845 states and 1592 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 20:52:19,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:19,841 INFO L93 Difference]: Finished difference Result 903 states and 1681 transitions. [2022-07-13 20:52:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:52:19,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-07-13 20:52:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:19,865 INFO L225 Difference]: With dead ends: 903 [2022-07-13 20:52:19,865 INFO L226 Difference]: Without dead ends: 845 [2022-07-13 20:52:19,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:52:19,867 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:19,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:52:19,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-07-13 20:52:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2022-07-13 20:52:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8517200474495847) internal successors, (1561), 844 states have internal predecessors, (1561), 0 states have call successors, (0), 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 20:52:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1561 transitions. [2022-07-13 20:52:19,899 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1561 transitions. Word has length 34 [2022-07-13 20:52:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:19,899 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1561 transitions. [2022-07-13 20:52:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 20:52:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1561 transitions. [2022-07-13 20:52:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:52:19,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:19,903 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] [2022-07-13 20:52:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:52:19,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1337087153, now seen corresponding path program 1 times [2022-07-13 20:52:19,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:19,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124810578] [2022-07-13 20:52:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:20,020 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 20:52:20,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:20,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124810578] [2022-07-13 20:52:20,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124810578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:20,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:20,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:20,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054622989] [2022-07-13 20:52:20,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:20,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:20,025 INFO L87 Difference]: Start difference. First operand 845 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 20:52:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:20,095 INFO L93 Difference]: Finished difference Result 947 states and 1721 transitions. [2022-07-13 20:52:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-13 20:52:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:20,105 INFO L225 Difference]: With dead ends: 947 [2022-07-13 20:52:20,105 INFO L226 Difference]: Without dead ends: 893 [2022-07-13 20:52:20,109 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 20:52:20,112 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1498 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:20,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1676 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-07-13 20:52:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 891. [2022-07-13 20:52:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8380202474690663) internal successors, (1634), 890 states have internal predecessors, (1634), 0 states have call successors, (0), 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 20:52:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1634 transitions. [2022-07-13 20:52:20,138 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1634 transitions. Word has length 64 [2022-07-13 20:52:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:20,139 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1634 transitions. [2022-07-13 20:52:20,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 20:52:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1634 transitions. [2022-07-13 20:52:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:52:20,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:20,141 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] [2022-07-13 20:52:20,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:52:20,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:20,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash -119101755, now seen corresponding path program 1 times [2022-07-13 20:52:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:20,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14249353] [2022-07-13 20:52:20,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:20,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:20,283 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 20:52:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:20,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14249353] [2022-07-13 20:52:20,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14249353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:20,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:20,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:52:20,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298667956] [2022-07-13 20:52:20,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:20,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:52:20,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:52:20,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:52:20,289 INFO L87 Difference]: Start difference. First operand 891 states and 1634 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 20:52:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:20,561 INFO L93 Difference]: Finished difference Result 1891 states and 3214 transitions. [2022-07-13 20:52:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 20:52:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-13 20:52:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:20,572 INFO L225 Difference]: With dead ends: 1891 [2022-07-13 20:52:20,572 INFO L226 Difference]: Without dead ends: 1791 [2022-07-13 20:52:20,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-13 20:52:20,580 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 8419 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8419 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:20,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8419 Valid, 2463 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:52:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-07-13 20:52:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 989. [2022-07-13 20:52:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 987 states have (on average 1.8105369807497467) internal successors, (1787), 988 states have internal predecessors, (1787), 0 states have call successors, (0), 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 20:52:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1787 transitions. [2022-07-13 20:52:20,623 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1787 transitions. Word has length 64 [2022-07-13 20:52:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1787 transitions. [2022-07-13 20:52:20,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 20:52:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1787 transitions. [2022-07-13 20:52:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:52:20,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:20,626 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] [2022-07-13 20:52:20,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:52:20,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash 91634997, now seen corresponding path program 1 times [2022-07-13 20:52:20,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:20,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625303516] [2022-07-13 20:52:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:20,711 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 20:52:20,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:20,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625303516] [2022-07-13 20:52:20,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625303516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:20,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:20,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:20,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613611742] [2022-07-13 20:52:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:20,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:20,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:20,714 INFO L87 Difference]: Start difference. First operand 989 states and 1787 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:20,766 INFO L93 Difference]: Finished difference Result 1363 states and 2371 transitions. [2022-07-13 20:52:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:20,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-13 20:52:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:20,772 INFO L225 Difference]: With dead ends: 1363 [2022-07-13 20:52:20,772 INFO L226 Difference]: Without dead ends: 1165 [2022-07-13 20:52:20,773 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 20:52:20,774 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:20,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1635 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:20,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-07-13 20:52:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1159. [2022-07-13 20:52:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1157 states have (on average 1.7675021607605876) internal successors, (2045), 1158 states have internal predecessors, (2045), 0 states have call successors, (0), 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 20:52:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2045 transitions. [2022-07-13 20:52:20,816 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2045 transitions. Word has length 66 [2022-07-13 20:52:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:20,819 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 2045 transitions. [2022-07-13 20:52:20,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2045 transitions. [2022-07-13 20:52:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:52:20,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:20,821 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] [2022-07-13 20:52:20,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:52:20,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:20,827 INFO L85 PathProgramCache]: Analyzing trace with hash 158128509, now seen corresponding path program 1 times [2022-07-13 20:52:20,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:20,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661040062] [2022-07-13 20:52:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:20,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:21,002 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 20:52:21,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:21,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661040062] [2022-07-13 20:52:21,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661040062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:21,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:21,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:52:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946947131] [2022-07-13 20:52:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:21,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:52:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:52:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:52:21,005 INFO L87 Difference]: Start difference. First operand 1159 states and 2045 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:21,214 INFO L93 Difference]: Finished difference Result 1529 states and 2615 transitions. [2022-07-13 20:52:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:52:21,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-13 20:52:21,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:21,220 INFO L225 Difference]: With dead ends: 1529 [2022-07-13 20:52:21,220 INFO L226 Difference]: Without dead ends: 1161 [2022-07-13 20:52:21,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-13 20:52:21,222 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 6156 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6156 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:21,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6156 Valid, 1893 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-07-13 20:52:21,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2022-07-13 20:52:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1157 states have (on average 1.7640449438202248) internal successors, (2041), 1158 states have internal predecessors, (2041), 0 states have call successors, (0), 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 20:52:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2041 transitions. [2022-07-13 20:52:21,262 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2041 transitions. Word has length 66 [2022-07-13 20:52:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:21,263 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 2041 transitions. [2022-07-13 20:52:21,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2041 transitions. [2022-07-13 20:52:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:52:21,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:21,264 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] [2022-07-13 20:52:21,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:52:21,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1100417095, now seen corresponding path program 1 times [2022-07-13 20:52:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:21,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215483109] [2022-07-13 20:52:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:21,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:21,337 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 20:52:21,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:21,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215483109] [2022-07-13 20:52:21,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215483109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:21,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:21,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:21,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139643314] [2022-07-13 20:52:21,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:21,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:21,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:21,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:21,340 INFO L87 Difference]: Start difference. First operand 1159 states and 2041 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:21,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:21,394 INFO L93 Difference]: Finished difference Result 1847 states and 3091 transitions. [2022-07-13 20:52:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:21,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-13 20:52:21,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:21,401 INFO L225 Difference]: With dead ends: 1847 [2022-07-13 20:52:21,401 INFO L226 Difference]: Without dead ends: 1479 [2022-07-13 20:52:21,402 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 20:52:21,403 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 1502 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:21,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1686 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-07-13 20:52:21,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1477. [2022-07-13 20:52:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1475 states have (on average 1.7064406779661017) internal successors, (2517), 1476 states have internal predecessors, (2517), 0 states have call successors, (0), 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 20:52:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2517 transitions. [2022-07-13 20:52:21,514 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2517 transitions. Word has length 66 [2022-07-13 20:52:21,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:21,515 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 2517 transitions. [2022-07-13 20:52:21,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2517 transitions. [2022-07-13 20:52:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:52:21,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:21,516 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] [2022-07-13 20:52:21,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:52:21,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash -826729383, now seen corresponding path program 1 times [2022-07-13 20:52:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:21,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279591271] [2022-07-13 20:52:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:21,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:21,559 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 20:52:21,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:21,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279591271] [2022-07-13 20:52:21,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279591271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:21,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:21,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:21,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690153063] [2022-07-13 20:52:21,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:21,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:21,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:21,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:21,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:21,562 INFO L87 Difference]: Start difference. First operand 1477 states and 2517 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:21,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:21,651 INFO L93 Difference]: Finished difference Result 2753 states and 4439 transitions. [2022-07-13 20:52:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:21,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-13 20:52:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:21,660 INFO L225 Difference]: With dead ends: 2753 [2022-07-13 20:52:21,660 INFO L226 Difference]: Without dead ends: 2067 [2022-07-13 20:52:21,662 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 20:52:21,663 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:21,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1695 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2022-07-13 20:52:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2065. [2022-07-13 20:52:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 2063 states have (on average 1.6388754241396024) internal successors, (3381), 2064 states have internal predecessors, (3381), 0 states have call successors, (0), 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 20:52:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 3381 transitions. [2022-07-13 20:52:21,774 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 3381 transitions. Word has length 66 [2022-07-13 20:52:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:21,775 INFO L495 AbstractCegarLoop]: Abstraction has 2065 states and 3381 transitions. [2022-07-13 20:52:21,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 3381 transitions. [2022-07-13 20:52:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:52:21,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:21,777 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] [2022-07-13 20:52:21,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:52:21,778 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:21,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash 992342265, now seen corresponding path program 1 times [2022-07-13 20:52:21,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:21,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372371238] [2022-07-13 20:52:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:21,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:21,832 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 20:52:21,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:21,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372371238] [2022-07-13 20:52:21,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372371238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:21,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:21,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:21,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765190625] [2022-07-13 20:52:21,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:21,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:21,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:21,836 INFO L87 Difference]: Start difference. First operand 2065 states and 3381 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:22,003 INFO L93 Difference]: Finished difference Result 4421 states and 6871 transitions. [2022-07-13 20:52:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-13 20:52:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:22,016 INFO L225 Difference]: With dead ends: 4421 [2022-07-13 20:52:22,017 INFO L226 Difference]: Without dead ends: 3147 [2022-07-13 20:52:22,019 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 20:52:22,020 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 1510 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:22,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2022-07-13 20:52:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 3145. [2022-07-13 20:52:22,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3143 states have (on average 1.5695195672923958) internal successors, (4933), 3144 states have internal predecessors, (4933), 0 states have call successors, (0), 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 20:52:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 4933 transitions. [2022-07-13 20:52:22,197 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 4933 transitions. Word has length 66 [2022-07-13 20:52:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:22,198 INFO L495 AbstractCegarLoop]: Abstraction has 3145 states and 4933 transitions. [2022-07-13 20:52:22,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:52:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 4933 transitions. [2022-07-13 20:52:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 20:52:22,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:22,199 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] [2022-07-13 20:52:22,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:52:22,200 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash 618821252, now seen corresponding path program 1 times [2022-07-13 20:52:22,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:22,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317075558] [2022-07-13 20:52:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:22,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:22,277 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 20:52:22,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:22,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317075558] [2022-07-13 20:52:22,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317075558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:22,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:22,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:22,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77039340] [2022-07-13 20:52:22,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:22,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:52:22,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:22,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:52:22,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:52:22,279 INFO L87 Difference]: Start difference. First operand 3145 states and 4933 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 20:52:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:27,985 INFO L93 Difference]: Finished difference Result 5400 states and 9242 transitions. [2022-07-13 20:52:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:52:27,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-13 20:52:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:28,005 INFO L225 Difference]: With dead ends: 5400 [2022-07-13 20:52:28,005 INFO L226 Difference]: Without dead ends: 4647 [2022-07-13 20:52:28,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:52:28,008 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 2424 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:28,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 833 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-13 20:52:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2022-07-13 20:52:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4647. [2022-07-13 20:52:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4647 states, 4645 states have (on average 1.48740581270183) internal successors, (6909), 4646 states have internal predecessors, (6909), 0 states have call successors, (0), 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 20:52:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 6909 transitions. [2022-07-13 20:52:28,281 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 6909 transitions. Word has length 67 [2022-07-13 20:52:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:28,281 INFO L495 AbstractCegarLoop]: Abstraction has 4647 states and 6909 transitions. [2022-07-13 20:52:28,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 20:52:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 6909 transitions. [2022-07-13 20:52:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 20:52:28,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:28,283 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] [2022-07-13 20:52:28,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:52:28,283 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:28,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash 192293446, now seen corresponding path program 1 times [2022-07-13 20:52:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:28,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521489788] [2022-07-13 20:52:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:28,348 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 20:52:28,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:28,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521489788] [2022-07-13 20:52:28,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521489788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:28,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:28,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:52:28,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495994884] [2022-07-13 20:52:28,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:28,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:52:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:52:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:52:28,352 INFO L87 Difference]: Start difference. First operand 4647 states and 6909 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 20:52:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:28,766 INFO L93 Difference]: Finished difference Result 6405 states and 9443 transitions. [2022-07-13 20:52:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:52:28,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-13 20:52:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:28,809 INFO L225 Difference]: With dead ends: 6405 [2022-07-13 20:52:28,809 INFO L226 Difference]: Without dead ends: 6403 [2022-07-13 20:52:28,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:52:28,815 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 225 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 6291 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:28,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 6291 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2022-07-13 20:52:29,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 4743. [2022-07-13 20:52:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4743 states, 4741 states have (on average 1.4741615692891794) internal successors, (6989), 4742 states have internal predecessors, (6989), 0 states have call successors, (0), 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 20:52:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 6989 transitions. [2022-07-13 20:52:29,129 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 6989 transitions. Word has length 67 [2022-07-13 20:52:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:29,130 INFO L495 AbstractCegarLoop]: Abstraction has 4743 states and 6989 transitions. [2022-07-13 20:52:29,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 20:52:29,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 6989 transitions. [2022-07-13 20:52:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:52:29,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:29,131 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] [2022-07-13 20:52:29,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:52:29,132 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1338319212, now seen corresponding path program 1 times [2022-07-13 20:52:29,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:29,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075835599] [2022-07-13 20:52:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:29,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:29,180 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 20:52:29,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:29,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075835599] [2022-07-13 20:52:29,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075835599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:29,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:29,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:29,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201922317] [2022-07-13 20:52:29,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:29,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:29,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:29,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:29,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:29,183 INFO L87 Difference]: Start difference. First operand 4743 states and 6989 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 20:52:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:29,498 INFO L93 Difference]: Finished difference Result 7246 states and 10643 transitions. [2022-07-13 20:52:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:29,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-13 20:52:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:29,512 INFO L225 Difference]: With dead ends: 7246 [2022-07-13 20:52:29,512 INFO L226 Difference]: Without dead ends: 5867 [2022-07-13 20:52:29,517 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 20:52:29,518 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 1511 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:29,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1708 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2022-07-13 20:52:29,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5865. [2022-07-13 20:52:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 5863 states have (on average 1.4625618284154869) internal successors, (8575), 5864 states have internal predecessors, (8575), 0 states have call successors, (0), 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 20:52:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 8575 transitions. [2022-07-13 20:52:29,863 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 8575 transitions. Word has length 68 [2022-07-13 20:52:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:29,863 INFO L495 AbstractCegarLoop]: Abstraction has 5865 states and 8575 transitions. [2022-07-13 20:52:29,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 20:52:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 8575 transitions. [2022-07-13 20:52:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 20:52:29,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:29,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:52:29,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:52:29,867 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash -482219864, now seen corresponding path program 1 times [2022-07-13 20:52:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:29,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399110985] [2022-07-13 20:52:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 20:52:29,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:29,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399110985] [2022-07-13 20:52:29,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399110985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:29,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:29,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:52:29,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205968778] [2022-07-13 20:52:29,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:29,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:52:29,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:52:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:52:29,946 INFO L87 Difference]: Start difference. First operand 5865 states and 8575 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 20:52:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:31,199 INFO L93 Difference]: Finished difference Result 24437 states and 35173 transitions. [2022-07-13 20:52:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:52:31,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 95 [2022-07-13 20:52:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:31,247 INFO L225 Difference]: With dead ends: 24437 [2022-07-13 20:52:31,247 INFO L226 Difference]: Without dead ends: 20867 [2022-07-13 20:52:31,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:52:31,262 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6639 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6639 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:31,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6639 Valid, 3585 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:52:31,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20867 states. [2022-07-13 20:52:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20867 to 9433. [2022-07-13 20:52:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9433 states, 9431 states have (on average 1.447036369419998) internal successors, (13647), 9432 states have internal predecessors, (13647), 0 states have call successors, (0), 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 20:52:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9433 states to 9433 states and 13647 transitions. [2022-07-13 20:52:32,092 INFO L78 Accepts]: Start accepts. Automaton has 9433 states and 13647 transitions. Word has length 95 [2022-07-13 20:52:32,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:32,093 INFO L495 AbstractCegarLoop]: Abstraction has 9433 states and 13647 transitions. [2022-07-13 20:52:32,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 20:52:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9433 states and 13647 transitions. [2022-07-13 20:52:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 20:52:32,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:32,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:32,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 20:52:32,097 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash -452697646, now seen corresponding path program 1 times [2022-07-13 20:52:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:32,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339383454] [2022-07-13 20:52:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:32,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 20:52:32,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:32,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339383454] [2022-07-13 20:52:32,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339383454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:32,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:32,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:52:32,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660359073] [2022-07-13 20:52:32,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:32,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:52:32,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:52:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:52:32,177 INFO L87 Difference]: Start difference. First operand 9433 states and 13647 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 20:52:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:33,528 INFO L93 Difference]: Finished difference Result 28005 states and 40245 transitions. [2022-07-13 20:52:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:52:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 95 [2022-07-13 20:52:33,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:33,581 INFO L225 Difference]: With dead ends: 28005 [2022-07-13 20:52:33,581 INFO L226 Difference]: Without dead ends: 24435 [2022-07-13 20:52:33,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:52:33,595 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 6527 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6527 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:33,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6527 Valid, 3644 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:52:33,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24435 states. [2022-07-13 20:52:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24435 to 14793. [2022-07-13 20:52:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14793 states, 14791 states have (on average 1.4343181664525726) internal successors, (21215), 14792 states have internal predecessors, (21215), 0 states have call successors, (0), 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 20:52:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14793 states to 14793 states and 21215 transitions. [2022-07-13 20:52:34,517 INFO L78 Accepts]: Start accepts. Automaton has 14793 states and 21215 transitions. Word has length 95 [2022-07-13 20:52:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:34,517 INFO L495 AbstractCegarLoop]: Abstraction has 14793 states and 21215 transitions. [2022-07-13 20:52:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 20:52:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 14793 states and 21215 transitions. [2022-07-13 20:52:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 20:52:34,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:34,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:34,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 20:52:34,522 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash -179009934, now seen corresponding path program 1 times [2022-07-13 20:52:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:34,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37687097] [2022-07-13 20:52:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 20:52:34,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:34,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37687097] [2022-07-13 20:52:34,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37687097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:34,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:34,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:52:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580648517] [2022-07-13 20:52:34,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:34,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:52:34,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:52:34,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:52:34,585 INFO L87 Difference]: Start difference. First operand 14793 states and 21215 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 20:52:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:36,359 INFO L93 Difference]: Finished difference Result 31573 states and 45317 transitions. [2022-07-13 20:52:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:52:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 95 [2022-07-13 20:52:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:36,423 INFO L225 Difference]: With dead ends: 31573 [2022-07-13 20:52:36,423 INFO L226 Difference]: Without dead ends: 28003 [2022-07-13 20:52:36,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:52:36,443 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 6537 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6537 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:36,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6537 Valid, 3676 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:52:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28003 states. [2022-07-13 20:52:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28003 to 18361. [2022-07-13 20:52:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18361 states, 18359 states have (on average 1.431831799117599) internal successors, (26287), 18360 states have internal predecessors, (26287), 0 states have call successors, (0), 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 20:52:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18361 states to 18361 states and 26287 transitions. [2022-07-13 20:52:37,859 INFO L78 Accepts]: Start accepts. Automaton has 18361 states and 26287 transitions. Word has length 95 [2022-07-13 20:52:37,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:37,860 INFO L495 AbstractCegarLoop]: Abstraction has 18361 states and 26287 transitions. [2022-07-13 20:52:37,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 20:52:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 18361 states and 26287 transitions. [2022-07-13 20:52:37,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 20:52:37,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:37,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:37,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 20:52:37,865 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1640061714, now seen corresponding path program 1 times [2022-07-13 20:52:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:37,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263144860] [2022-07-13 20:52:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 20:52:37,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:37,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263144860] [2022-07-13 20:52:37,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263144860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:37,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:37,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:52:37,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473980463] [2022-07-13 20:52:37,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:37,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:52:37,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:37,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:52:37,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:52:37,929 INFO L87 Difference]: Start difference. First operand 18361 states and 26287 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 20:52:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:40,386 INFO L93 Difference]: Finished difference Result 35141 states and 50389 transitions. [2022-07-13 20:52:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:52:40,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 95 [2022-07-13 20:52:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:40,443 INFO L225 Difference]: With dead ends: 35141 [2022-07-13 20:52:40,443 INFO L226 Difference]: Without dead ends: 31571 [2022-07-13 20:52:40,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:52:40,459 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6612 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6612 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:40,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6612 Valid, 3623 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:52:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31571 states. [2022-07-13 20:52:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31571 to 21929. [2022-07-13 20:52:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21929 states, 21927 states have (on average 1.430154603912984) internal successors, (31359), 21928 states have internal predecessors, (31359), 0 states have call successors, (0), 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 20:52:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21929 states to 21929 states and 31359 transitions. [2022-07-13 20:52:42,144 INFO L78 Accepts]: Start accepts. Automaton has 21929 states and 31359 transitions. Word has length 95 [2022-07-13 20:52:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:42,144 INFO L495 AbstractCegarLoop]: Abstraction has 21929 states and 31359 transitions. [2022-07-13 20:52:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 20:52:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 21929 states and 31359 transitions. [2022-07-13 20:52:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 20:52:42,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:42,153 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:52:42,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 20:52:42,154 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:42,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash -906023264, now seen corresponding path program 1 times [2022-07-13 20:52:42,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:42,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234385599] [2022-07-13 20:52:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:52:42,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:42,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234385599] [2022-07-13 20:52:42,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234385599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:42,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:42,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:42,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370744417] [2022-07-13 20:52:42,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:42,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:42,208 INFO L87 Difference]: Start difference. First operand 21929 states and 31359 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 20:52:43,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:43,567 INFO L93 Difference]: Finished difference Result 35691 states and 51109 transitions. [2022-07-13 20:52:43,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:43,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-07-13 20:52:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:43,611 INFO L225 Difference]: With dead ends: 35691 [2022-07-13 20:52:43,611 INFO L226 Difference]: Without dead ends: 16057 [2022-07-13 20:52:43,635 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 20:52:43,635 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 54 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:43,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3146 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2022-07-13 20:52:44,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 16055. [2022-07-13 20:52:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16055 states, 16053 states have (on average 1.4343736373263565) internal successors, (23026), 16054 states have internal predecessors, (23026), 0 states have call successors, (0), 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 20:52:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16055 states to 16055 states and 23026 transitions. [2022-07-13 20:52:44,856 INFO L78 Accepts]: Start accepts. Automaton has 16055 states and 23026 transitions. Word has length 97 [2022-07-13 20:52:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:44,857 INFO L495 AbstractCegarLoop]: Abstraction has 16055 states and 23026 transitions. [2022-07-13 20:52:44,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 20:52:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 16055 states and 23026 transitions. [2022-07-13 20:52:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 20:52:44,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:44,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:44,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 20:52:44,861 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash -615309075, now seen corresponding path program 1 times [2022-07-13 20:52:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:44,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165829375] [2022-07-13 20:52:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:44,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:52:44,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:44,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165829375] [2022-07-13 20:52:44,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165829375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:44,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:44,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:52:44,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107481814] [2022-07-13 20:52:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:52:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:52:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:52:44,937 INFO L87 Difference]: Start difference. First operand 16055 states and 23026 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 20:52:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:47,113 INFO L93 Difference]: Finished difference Result 28547 states and 40952 transitions. [2022-07-13 20:52:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:52:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 97 [2022-07-13 20:52:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:47,151 INFO L225 Difference]: With dead ends: 28547 [2022-07-13 20:52:47,151 INFO L226 Difference]: Without dead ends: 26049 [2022-07-13 20:52:47,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:52:47,165 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 6590 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6590 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:47,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6590 Valid, 3594 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:52:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26049 states. [2022-07-13 20:52:48,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26049 to 18551. [2022-07-13 20:52:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18551 states, 18549 states have (on average 1.4328535231009758) internal successors, (26578), 18550 states have internal predecessors, (26578), 0 states have call successors, (0), 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 20:52:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18551 states to 18551 states and 26578 transitions. [2022-07-13 20:52:48,677 INFO L78 Accepts]: Start accepts. Automaton has 18551 states and 26578 transitions. Word has length 97 [2022-07-13 20:52:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:48,678 INFO L495 AbstractCegarLoop]: Abstraction has 18551 states and 26578 transitions. [2022-07-13 20:52:48,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 20:52:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 18551 states and 26578 transitions. [2022-07-13 20:52:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 20:52:48,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:48,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:48,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 20:52:48,683 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash -605888281, now seen corresponding path program 1 times [2022-07-13 20:52:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:48,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491465017] [2022-07-13 20:52:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:52:48,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491465017] [2022-07-13 20:52:48,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491465017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:48,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:48,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:48,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716199062] [2022-07-13 20:52:48,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:48,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:48,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:48,730 INFO L87 Difference]: Start difference. First operand 18551 states and 26578 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 20:52:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:49,478 INFO L93 Difference]: Finished difference Result 26667 states and 38124 transitions. [2022-07-13 20:52:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:49,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-13 20:52:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:49,489 INFO L225 Difference]: With dead ends: 26667 [2022-07-13 20:52:49,489 INFO L226 Difference]: Without dead ends: 10441 [2022-07-13 20:52:49,510 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 20:52:49,510 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 48 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:49,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10441 states. [2022-07-13 20:52:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10441 to 10439. [2022-07-13 20:52:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10439 states, 10437 states have (on average 1.4304876880329596) internal successors, (14930), 10438 states have internal predecessors, (14930), 0 states have call successors, (0), 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 20:52:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10439 states to 10439 states and 14930 transitions. [2022-07-13 20:52:50,281 INFO L78 Accepts]: Start accepts. Automaton has 10439 states and 14930 transitions. Word has length 98 [2022-07-13 20:52:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:50,282 INFO L495 AbstractCegarLoop]: Abstraction has 10439 states and 14930 transitions. [2022-07-13 20:52:50,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 20:52:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10439 states and 14930 transitions. [2022-07-13 20:52:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 20:52:50,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:50,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:50,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 20:52:50,285 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:50,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1773467421, now seen corresponding path program 1 times [2022-07-13 20:52:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:50,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577913849] [2022-07-13 20:52:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:50,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:52:50,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:50,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577913849] [2022-07-13 20:52:50,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577913849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:50,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:50,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:50,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462493225] [2022-07-13 20:52:50,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:50,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:50,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:50,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:50,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:50,325 INFO L87 Difference]: Start difference. First operand 10439 states and 14930 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 20:52:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:50,785 INFO L93 Difference]: Finished difference Result 14499 states and 20652 transitions. [2022-07-13 20:52:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:50,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-13 20:52:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:50,797 INFO L225 Difference]: With dead ends: 14499 [2022-07-13 20:52:50,797 INFO L226 Difference]: Without dead ends: 6385 [2022-07-13 20:52:50,809 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 20:52:50,810 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 44 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:50,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:50,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2022-07-13 20:52:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 6383. [2022-07-13 20:52:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6383 states, 6381 states have (on average 1.435198244789218) internal successors, (9158), 6382 states have internal predecessors, (9158), 0 states have call successors, (0), 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 20:52:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6383 states to 6383 states and 9158 transitions. [2022-07-13 20:52:51,234 INFO L78 Accepts]: Start accepts. Automaton has 6383 states and 9158 transitions. Word has length 98 [2022-07-13 20:52:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:51,235 INFO L495 AbstractCegarLoop]: Abstraction has 6383 states and 9158 transitions. [2022-07-13 20:52:51,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 20:52:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6383 states and 9158 transitions. [2022-07-13 20:52:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 20:52:51,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:51,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:51,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 20:52:51,241 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash -934897581, now seen corresponding path program 1 times [2022-07-13 20:52:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:51,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479907341] [2022-07-13 20:52:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:52:51,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479907341] [2022-07-13 20:52:51,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479907341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:52:51,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:52:51,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:52:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540547716] [2022-07-13 20:52:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:52:51,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:52:51,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:51,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:52:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:52:51,317 INFO L87 Difference]: Start difference. First operand 6383 states and 9158 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 20:52:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:51,573 INFO L93 Difference]: Finished difference Result 8415 states and 11994 transitions. [2022-07-13 20:52:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:52:51,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-13 20:52:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:51,580 INFO L225 Difference]: With dead ends: 8415 [2022-07-13 20:52:51,580 INFO L226 Difference]: Without dead ends: 4357 [2022-07-13 20:52:51,584 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 20:52:51,585 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 40 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:51,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:52:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2022-07-13 20:52:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4355. [2022-07-13 20:52:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4353 states have (on average 1.4468182862393753) internal successors, (6298), 4354 states have internal predecessors, (6298), 0 states have call successors, (0), 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 20:52:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 6298 transitions. [2022-07-13 20:52:51,817 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 6298 transitions. Word has length 98 [2022-07-13 20:52:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:51,817 INFO L495 AbstractCegarLoop]: Abstraction has 4355 states and 6298 transitions. [2022-07-13 20:52:51,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 20:52:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 6298 transitions. [2022-07-13 20:52:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 20:52:51,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:51,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:51,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 20:52:51,819 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1022016375, now seen corresponding path program 1 times [2022-07-13 20:52:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:51,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282223711] [2022-07-13 20:52:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:52:52,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282223711] [2022-07-13 20:52:52,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282223711] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:52:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116623762] [2022-07-13 20:52:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:52,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:52:52,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:52:52,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:52:52,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:52:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:52,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 20:52:52,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:52:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:52:52,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:52:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:52:52,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116623762] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:52:52,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:52:52,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-13 20:52:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94631391] [2022-07-13 20:52:52,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:52:52,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 20:52:52,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:52:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 20:52:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 20:52:52,697 INFO L87 Difference]: Start difference. First operand 4355 states and 6298 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 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 20:52:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:52:57,700 INFO L93 Difference]: Finished difference Result 29531 states and 40482 transitions. [2022-07-13 20:52:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-13 20:52:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 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 98 [2022-07-13 20:52:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:52:57,735 INFO L225 Difference]: With dead ends: 29531 [2022-07-13 20:52:57,735 INFO L226 Difference]: Without dead ends: 27501 [2022-07-13 20:52:57,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2022-07-13 20:52:57,748 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 14633 mSDsluCounter, 5549 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14633 SdHoareTripleChecker+Valid, 7123 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:52:57,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14633 Valid, 7123 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:52:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27501 states. [2022-07-13 20:52:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27501 to 19602. [2022-07-13 20:52:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19602 states, 19600 states have (on average 1.3460714285714286) internal successors, (26383), 19601 states have internal predecessors, (26383), 0 states have call successors, (0), 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 20:52:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19602 states to 19602 states and 26383 transitions. [2022-07-13 20:52:59,521 INFO L78 Accepts]: Start accepts. Automaton has 19602 states and 26383 transitions. Word has length 98 [2022-07-13 20:52:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:52:59,521 INFO L495 AbstractCegarLoop]: Abstraction has 19602 states and 26383 transitions. [2022-07-13 20:52:59,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 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 20:52:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 19602 states and 26383 transitions. [2022-07-13 20:52:59,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 20:52:59,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:52:59,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:52:59,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 20:52:59,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-13 20:52:59,724 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:52:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:52:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1244176043, now seen corresponding path program 1 times [2022-07-13 20:52:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:52:59,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671806720] [2022-07-13 20:52:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:52:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:52:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:52:59,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:52:59,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671806720] [2022-07-13 20:52:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671806720] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:52:59,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265369553] [2022-07-13 20:52:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:52:59,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:52:59,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:52:59,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:52:59,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:53:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:53:00,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 20:53:00,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:53:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:53:00,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:53:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:53:01,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265369553] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:53:01,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:53:01,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-07-13 20:53:01,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381941355] [2022-07-13 20:53:01,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:53:01,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 20:53:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:53:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 20:53:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-13 20:53:01,177 INFO L87 Difference]: Start difference. First operand 19602 states and 26383 transitions. Second operand has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 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 20:53:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:53:32,586 INFO L93 Difference]: Finished difference Result 230955 states and 302079 transitions. [2022-07-13 20:53:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-07-13 20:53:32,587 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 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 99 [2022-07-13 20:53:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:53:33,117 INFO L225 Difference]: With dead ends: 230955 [2022-07-13 20:53:33,117 INFO L226 Difference]: Without dead ends: 213956 [2022-07-13 20:53:33,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8067 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3510, Invalid=19140, Unknown=0, NotChecked=0, Total=22650 [2022-07-13 20:53:33,188 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 22697 mSDsluCounter, 10829 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22697 SdHoareTripleChecker+Valid, 12469 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:53:33,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22697 Valid, 12469 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 20:53:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213956 states.