./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label21.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/eca-rers2012/Problem19_label21.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 259e20ec3dce8325954803d27c5affb1e2b628aaa79b98f511469a5a906aac01 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 13:29:06,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 13:29:06,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 13:29:06,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 13:29:06,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 13:29:06,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 13:29:06,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 13:29:06,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 13:29:06,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 13:29:06,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 13:29:06,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 13:29:06,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 13:29:06,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 13:29:06,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 13:29:06,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 13:29:06,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 13:29:06,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 13:29:06,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 13:29:06,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 13:29:06,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 13:29:06,357 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 13:29:06,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 13:29:06,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 13:29:06,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 13:29:06,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 13:29:06,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 13:29:06,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 13:29:06,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 13:29:06,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 13:29:06,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 13:29:06,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 13:29:06,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 13:29:06,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 13:29:06,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 13:29:06,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 13:29:06,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 13:29:06,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 13:29:06,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 13:29:06,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 13:29:06,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 13:29:06,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 13:29:06,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 13:29:06,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 13:29:06,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 13:29:06,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 13:29:06,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 13:29:06,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 13:29:06,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 13:29:06,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 13:29:06,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 13:29:06,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 13:29:06,404 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 13:29:06,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 13:29:06,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 13:29:06,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 13:29:06,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 13:29:06,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 13:29:06,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 13:29:06,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 13:29:06,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 13:29:06,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 13:29:06,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 13:29:06,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 13:29:06,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 13:29:06,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 13:29:06,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 13:29:06,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 13:29:06,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:29:06,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 13:29:06,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 13:29:06,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 13:29:06,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 13:29:06,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 13:29:06,408 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 13:29:06,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 13:29:06,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 13:29:06,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 259e20ec3dce8325954803d27c5affb1e2b628aaa79b98f511469a5a906aac01 [2022-07-13 13:29:06,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 13:29:06,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 13:29:06,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 13:29:06,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 13:29:06,626 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 13:29:06,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label21.c [2022-07-13 13:29:06,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fef00d5c0/5b029ad6b5534fa4a784c02a57c8de21/FLAG8d2ae1de4 [2022-07-13 13:29:07,356 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 13:29:07,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label21.c [2022-07-13 13:29:07,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fef00d5c0/5b029ad6b5534fa4a784c02a57c8de21/FLAG8d2ae1de4 [2022-07-13 13:29:07,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fef00d5c0/5b029ad6b5534fa4a784c02a57c8de21 [2022-07-13 13:29:07,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 13:29:07,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 13:29:07,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 13:29:07,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 13:29:07,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 13:29:07,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:29:07" (1/1) ... [2022-07-13 13:29:07,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1776ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:07, skipping insertion in model container [2022-07-13 13:29:07,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:29:07" (1/1) ... [2022-07-13 13:29:07,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 13:29:07,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 13:29:08,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label21.c[2361,2374] [2022-07-13 13:29:08,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:29:08,932 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 13:29:08,956 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label21.c[2361,2374] [2022-07-13 13:29:09,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:29:09,550 INFO L208 MainTranslator]: Completed translation [2022-07-13 13:29:09,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09 WrapperNode [2022-07-13 13:29:09,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 13:29:09,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 13:29:09,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 13:29:09,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 13:29:09,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:09,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:10,412 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-13 13:29:10,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 13:29:10,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 13:29:10,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 13:29:10,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 13:29:10,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:10,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:10,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:10,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:10,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:10,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:10,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:11,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 13:29:11,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 13:29:11,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 13:29:11,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 13:29:11,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (1/1) ... [2022-07-13 13:29:11,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:29:11,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:29:11,188 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 13:29:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 13:29:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 13:29:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 13:29:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 13:29:11,244 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 13:29:11,307 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 13:29:11,308 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 13:29:16,953 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 13:29:16,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 13:29:16,972 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 13:29:16,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:29:16 BoogieIcfgContainer [2022-07-13 13:29:16,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 13:29:16,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 13:29:16,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 13:29:16,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 13:29:16,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:29:07" (1/3) ... [2022-07-13 13:29:16,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cceb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:29:16, skipping insertion in model container [2022-07-13 13:29:16,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:09" (2/3) ... [2022-07-13 13:29:16,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cceb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:29:16, skipping insertion in model container [2022-07-13 13:29:16,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:29:16" (3/3) ... [2022-07-13 13:29:16,983 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label21.c [2022-07-13 13:29:16,992 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 13:29:16,992 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 13:29:17,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 13:29:17,058 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@6728d4ef, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@b9d7c8 [2022-07-13 13:29:17,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 13:29:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states 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 13:29:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 13:29:17,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:29:17,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:29:17,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:29:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:29:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash -884752143, now seen corresponding path program 1 times [2022-07-13 13:29:17,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:29:17,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875644820] [2022-07-13 13:29:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:29:17,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:29:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:29:17,187 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 13:29:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:29:17,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875644820] [2022-07-13 13:29:17,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875644820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:29:17,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:29:17,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:29:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427969602] [2022-07-13 13:29:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:29:17,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:29:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:29:17,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:29:17,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:29:17,216 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 13:29:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:29:23,124 INFO L93 Difference]: Finished difference Result 4975 states and 9416 transitions. [2022-07-13 13:29:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:29:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-07-13 13:29:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:29:23,148 INFO L225 Difference]: With dead ends: 4975 [2022-07-13 13:29:23,149 INFO L226 Difference]: Without dead ends: 3163 [2022-07-13 13:29:23,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:29:23,159 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 1531 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-13 13:29:23,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1524 Invalid, 5793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-13 13:29:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-07-13 13:29:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3123. [2022-07-13 13:29:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.6268417680973735) internal successors, (5079), 3122 states have internal predecessors, (5079), 0 states have call successors, (0), 0 states 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 13:29:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5079 transitions. [2022-07-13 13:29:23,275 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5079 transitions. Word has length 15 [2022-07-13 13:29:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:29:23,278 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5079 transitions. [2022-07-13 13:29:23,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 13:29:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5079 transitions. [2022-07-13 13:29:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-13 13:29:23,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:29:23,281 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 13:29:23,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 13:29:23,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:29:23,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:29:23,282 INFO L85 PathProgramCache]: Analyzing trace with hash -843567897, now seen corresponding path program 1 times [2022-07-13 13:29:23,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:29:23,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851363410] [2022-07-13 13:29:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:29:23,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:29:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:29:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:29:23,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:29:23,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851363410] [2022-07-13 13:29:23,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851363410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:29:23,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:29:23,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:29:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831601089] [2022-07-13 13:29:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:29:23,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:29:23,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:29:23,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:29:23,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:29:23,432 INFO L87 Difference]: Start difference. First operand 3123 states and 5079 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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 13:29:29,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:29:29,251 INFO L93 Difference]: Finished difference Result 9055 states and 14814 transitions. [2022-07-13 13:29:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:29:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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 86 [2022-07-13 13:29:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:29:29,274 INFO L225 Difference]: With dead ends: 9055 [2022-07-13 13:29:29,274 INFO L226 Difference]: Without dead ends: 5934 [2022-07-13 13:29:29,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:29:29,284 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1536 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-13 13:29:29,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1543 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-13 13:29:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2022-07-13 13:29:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5910. [2022-07-13 13:29:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.4235911321712642) internal successors, (8412), 5909 states have internal predecessors, (8412), 0 states have call successors, (0), 0 states 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 13:29:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8412 transitions. [2022-07-13 13:29:29,382 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8412 transitions. Word has length 86 [2022-07-13 13:29:29,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:29:29,383 INFO L495 AbstractCegarLoop]: Abstraction has 5910 states and 8412 transitions. [2022-07-13 13:29:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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 13:29:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8412 transitions. [2022-07-13 13:29:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 13:29:29,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:29:29,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:29:29,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 13:29:29,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:29:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:29:29,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1253291785, now seen corresponding path program 1 times [2022-07-13 13:29:29,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:29:29,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129345413] [2022-07-13 13:29:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:29:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:29:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:29:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:29:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:29:29,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129345413] [2022-07-13 13:29:29,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129345413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:29:29,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:29:29,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:29:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156445527] [2022-07-13 13:29:29,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:29:29,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:29:29,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:29:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:29:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:29:29,520 INFO L87 Difference]: Start difference. First operand 5910 states and 8412 transitions. Second operand has 4 states, 4 states have (on average 24.5) 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 13:29:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:29:37,633 INFO L93 Difference]: Finished difference Result 18680 states and 26154 transitions. [2022-07-13 13:29:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:29:37,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) 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 13:29:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:29:37,669 INFO L225 Difference]: With dead ends: 18680 [2022-07-13 13:29:37,669 INFO L226 Difference]: Without dead ends: 12772 [2022-07-13 13:29:37,681 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 13:29:37,686 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 4363 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 7341 mSolverCounterSat, 2202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 9543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2202 IncrementalHoareTripleChecker+Valid, 7341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:29:37,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 1283 Invalid, 9543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2202 Valid, 7341 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-13 13:29:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2022-07-13 13:29:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12761. [2022-07-13 13:29:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12761 states, 12760 states have (on average 1.3467084639498432) internal successors, (17184), 12760 states have internal predecessors, (17184), 0 states have call successors, (0), 0 states 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 13:29:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12761 states to 12761 states and 17184 transitions. [2022-07-13 13:29:37,886 INFO L78 Accepts]: Start accepts. Automaton has 12761 states and 17184 transitions. Word has length 98 [2022-07-13 13:29:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:29:37,887 INFO L495 AbstractCegarLoop]: Abstraction has 12761 states and 17184 transitions. [2022-07-13 13:29:37,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) 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 13:29:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12761 states and 17184 transitions. [2022-07-13 13:29:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 13:29:37,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:29:37,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:29:37,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 13:29:37,896 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:29:37,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:29:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -894033946, now seen corresponding path program 1 times [2022-07-13 13:29:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:29:37,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296186436] [2022-07-13 13:29:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:29:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:29:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:29:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 13:29:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:29:38,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296186436] [2022-07-13 13:29:38,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296186436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:29:38,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:29:38,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:29:38,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347814108] [2022-07-13 13:29:38,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:29:38,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:29:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:29:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:29:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:29:38,178 INFO L87 Difference]: Start difference. First operand 12761 states and 17184 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 13:29:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:29:46,237 INFO L93 Difference]: Finished difference Result 31026 states and 41181 transitions. [2022-07-13 13:29:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:29:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 352 [2022-07-13 13:29:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:29:46,289 INFO L225 Difference]: With dead ends: 31026 [2022-07-13 13:29:46,289 INFO L226 Difference]: Without dead ends: 19632 [2022-07-13 13:29:46,302 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 13:29:46,303 INFO L413 NwaCegarLoop]: 1799 mSDtfsCounter, 3757 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9440 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 9865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 9440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-13 13:29:46,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 2153 Invalid, 9865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 9440 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-07-13 13:29:46,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19632 states. [2022-07-13 13:29:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19632 to 19608. [2022-07-13 13:29:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19608 states, 19607 states have (on average 1.2585811189881164) internal successors, (24677), 19607 states have internal predecessors, (24677), 0 states have call successors, (0), 0 states 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 13:29:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19608 states to 19608 states and 24677 transitions. [2022-07-13 13:29:46,529 INFO L78 Accepts]: Start accepts. Automaton has 19608 states and 24677 transitions. Word has length 352 [2022-07-13 13:29:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:29:46,531 INFO L495 AbstractCegarLoop]: Abstraction has 19608 states and 24677 transitions. [2022-07-13 13:29:46,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 13:29:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 19608 states and 24677 transitions. [2022-07-13 13:29:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-07-13 13:29:46,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:29:46,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:29:46,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 13:29:46,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:29:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:29:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash -87675188, now seen corresponding path program 1 times [2022-07-13 13:29:46,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:29:46,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172158731] [2022-07-13 13:29:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:29:46,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:29:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:29:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:29:46,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:29:46,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172158731] [2022-07-13 13:29:46,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172158731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:29:46,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:29:46,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:29:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798076902] [2022-07-13 13:29:46,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:29:46,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:29:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:29:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:29:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:29:46,815 INFO L87 Difference]: Start difference. First operand 19608 states and 24677 transitions. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 13:29:53,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:29:53,232 INFO L93 Difference]: Finished difference Result 36515 states and 46635 transitions. [2022-07-13 13:29:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:29:53,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 380 [2022-07-13 13:29:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:29:53,267 INFO L225 Difference]: With dead ends: 36515 [2022-07-13 13:29:53,267 INFO L226 Difference]: Without dead ends: 19608 [2022-07-13 13:29:53,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:29:53,279 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7317 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 7325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-13 13:29:53,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2113 Invalid, 7325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7317 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-13 13:29:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19608 states. [2022-07-13 13:29:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19608 to 19608. [2022-07-13 13:29:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19608 states, 19607 states have (on average 1.2579180904778906) internal successors, (24664), 19607 states have internal predecessors, (24664), 0 states have call successors, (0), 0 states 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 13:29:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19608 states to 19608 states and 24664 transitions. [2022-07-13 13:29:53,459 INFO L78 Accepts]: Start accepts. Automaton has 19608 states and 24664 transitions. Word has length 380 [2022-07-13 13:29:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:29:53,459 INFO L495 AbstractCegarLoop]: Abstraction has 19608 states and 24664 transitions. [2022-07-13 13:29:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 13:29:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 19608 states and 24664 transitions. [2022-07-13 13:29:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-07-13 13:29:53,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:29:53,466 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:53,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 13:29:53,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:29:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:29:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1693058845, now seen corresponding path program 1 times [2022-07-13 13:29:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:29:53,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524385383] [2022-07-13 13:29:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:29:53,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:29:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:29:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 13:29:53,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:29:53,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524385383] [2022-07-13 13:29:53,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524385383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:29:53,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:29:53,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:29:53,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460941481] [2022-07-13 13:29:53,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:29:53,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:29:53,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:29:53,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:29:53,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:29:53,708 INFO L87 Difference]: Start difference. First operand 19608 states and 24664 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 13:29:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:29:59,815 INFO L93 Difference]: Finished difference Result 53069 states and 68125 transitions. [2022-07-13 13:29:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:29:59,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 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 570 [2022-07-13 13:29:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:29:59,867 INFO L225 Difference]: With dead ends: 53069 [2022-07-13 13:29:59,867 INFO L226 Difference]: Without dead ends: 36193 [2022-07-13 13:29:59,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:29:59,889 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2111 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5117 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-13 13:29:59,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 988 Invalid, 5551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5117 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-13 13:29:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36193 states. [2022-07-13 13:30:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36193 to 36189. [2022-07-13 13:30:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36189 states, 36188 states have (on average 1.2502210677572676) internal successors, (45243), 36188 states have internal predecessors, (45243), 0 states have call successors, (0), 0 states 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 13:30:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36189 states to 36189 states and 45243 transitions. [2022-07-13 13:30:00,372 INFO L78 Accepts]: Start accepts. Automaton has 36189 states and 45243 transitions. Word has length 570 [2022-07-13 13:30:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:00,373 INFO L495 AbstractCegarLoop]: Abstraction has 36189 states and 45243 transitions. [2022-07-13 13:30:00,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 13:30:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 36189 states and 45243 transitions. [2022-07-13 13:30:00,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-07-13 13:30:00,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:00,383 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:00,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 13:30:00,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:00,384 INFO L85 PathProgramCache]: Analyzing trace with hash 3304489, now seen corresponding path program 1 times [2022-07-13 13:30:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:00,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491975942] [2022-07-13 13:30:00,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:00,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 13:30:00,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:00,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491975942] [2022-07-13 13:30:00,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491975942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:00,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:00,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:30:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943746570] [2022-07-13 13:30:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:00,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:30:00,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:00,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:30:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:00,632 INFO L87 Difference]: Start difference. First operand 36189 states and 45243 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 13:30:05,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:05,815 INFO L93 Difference]: Finished difference Result 80596 states and 102201 transitions. [2022-07-13 13:30:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:30:05,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 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 587 [2022-07-13 13:30:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:05,886 INFO L225 Difference]: With dead ends: 80596 [2022-07-13 13:30:05,886 INFO L226 Difference]: Without dead ends: 47139 [2022-07-13 13:30:05,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:05,921 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1387 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 2136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 6061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2136 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:05,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 752 Invalid, 6061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2136 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-13 13:30:05,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47139 states. [2022-07-13 13:30:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47139 to 47122. [2022-07-13 13:30:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47122 states, 47121 states have (on average 1.2294306148001952) internal successors, (57932), 47121 states have internal predecessors, (57932), 0 states have call successors, (0), 0 states 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 13:30:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47122 states to 47122 states and 57932 transitions. [2022-07-13 13:30:06,372 INFO L78 Accepts]: Start accepts. Automaton has 47122 states and 57932 transitions. Word has length 587 [2022-07-13 13:30:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:06,372 INFO L495 AbstractCegarLoop]: Abstraction has 47122 states and 57932 transitions. [2022-07-13 13:30:06,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 13:30:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 47122 states and 57932 transitions. [2022-07-13 13:30:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-07-13 13:30:06,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:06,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:06,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 13:30:06,381 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:06,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:06,381 INFO L85 PathProgramCache]: Analyzing trace with hash -283264241, now seen corresponding path program 1 times [2022-07-13 13:30:06,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:06,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102227261] [2022-07-13 13:30:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:06,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-13 13:30:06,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:06,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102227261] [2022-07-13 13:30:06,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102227261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:06,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:06,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:30:06,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018439089] [2022-07-13 13:30:06,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:06,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:30:06,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:06,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:30:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:06,617 INFO L87 Difference]: Start difference. First operand 47122 states and 57932 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 13:30:12,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:12,712 INFO L93 Difference]: Finished difference Result 128613 states and 160507 transitions. [2022-07-13 13:30:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:30:12,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 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 625 [2022-07-13 13:30:12,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:12,828 INFO L225 Difference]: With dead ends: 128613 [2022-07-13 13:30:12,829 INFO L226 Difference]: Without dead ends: 84223 [2022-07-13 13:30:12,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:12,870 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 1350 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 4297 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 5727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:12,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2062 Invalid, 5727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4297 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-13 13:30:12,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84223 states. [2022-07-13 13:30:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84223 to 82831. [2022-07-13 13:30:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82831 states, 82830 states have (on average 1.1579741639502596) internal successors, (95915), 82830 states have internal predecessors, (95915), 0 states have call successors, (0), 0 states 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 13:30:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82831 states to 82831 states and 95915 transitions. [2022-07-13 13:30:13,655 INFO L78 Accepts]: Start accepts. Automaton has 82831 states and 95915 transitions. Word has length 625 [2022-07-13 13:30:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:13,656 INFO L495 AbstractCegarLoop]: Abstraction has 82831 states and 95915 transitions. [2022-07-13 13:30:13,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 13:30:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 82831 states and 95915 transitions. [2022-07-13 13:30:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2022-07-13 13:30:13,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:13,668 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:13,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 13:30:13,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1679955262, now seen corresponding path program 1 times [2022-07-13 13:30:13,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:13,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487424268] [2022-07-13 13:30:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:13,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-13 13:30:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:13,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487424268] [2022-07-13 13:30:13,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487424268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:13,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:13,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 13:30:13,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149077608] [2022-07-13 13:30:13,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:13,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:30:13,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:30:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:13,933 INFO L87 Difference]: Start difference. First operand 82831 states and 95915 transitions. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 13:30:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:24,559 INFO L93 Difference]: Finished difference Result 265595 states and 313044 transitions. [2022-07-13 13:30:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:30:24,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 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 799 [2022-07-13 13:30:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:24,819 INFO L225 Difference]: With dead ends: 265595 [2022-07-13 13:30:24,819 INFO L226 Difference]: Without dead ends: 185496 [2022-07-13 13:30:24,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:24,872 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 3318 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 8783 mSolverCounterSat, 3101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 11884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3101 IncrementalHoareTripleChecker+Valid, 8783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:24,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3318 Valid, 1167 Invalid, 11884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3101 Valid, 8783 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-07-13 13:30:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185496 states. [2022-07-13 13:30:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185496 to 179882. [2022-07-13 13:30:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179882 states, 179881 states have (on average 1.146485732234088) internal successors, (206231), 179881 states have internal predecessors, (206231), 0 states have call successors, (0), 0 states 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 13:30:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179882 states to 179882 states and 206231 transitions. [2022-07-13 13:30:27,104 INFO L78 Accepts]: Start accepts. Automaton has 179882 states and 206231 transitions. Word has length 799 [2022-07-13 13:30:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:27,106 INFO L495 AbstractCegarLoop]: Abstraction has 179882 states and 206231 transitions. [2022-07-13 13:30:27,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 13:30:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 179882 states and 206231 transitions. [2022-07-13 13:30:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2022-07-13 13:30:27,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:27,116 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:27,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 13:30:27,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:27,117 INFO L85 PathProgramCache]: Analyzing trace with hash -569438715, now seen corresponding path program 1 times [2022-07-13 13:30:27,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:27,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676253410] [2022-07-13 13:30:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:27,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-07-13 13:30:27,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676253410] [2022-07-13 13:30:27,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676253410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:27,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:27,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:30:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129866465] [2022-07-13 13:30:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:27,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:30:27,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:30:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:27,599 INFO L87 Difference]: Start difference. First operand 179882 states and 206231 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 13:30:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:34,213 INFO L93 Difference]: Finished difference Result 415871 states and 484360 transitions. [2022-07-13 13:30:34,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:30:34,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 894 [2022-07-13 13:30:34,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:34,523 INFO L225 Difference]: With dead ends: 415871 [2022-07-13 13:30:34,523 INFO L226 Difference]: Without dead ends: 238721 [2022-07-13 13:30:34,580 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 13:30:34,581 INFO L413 NwaCegarLoop]: 3095 mSDtfsCounter, 1482 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4176 mSolverCounterSat, 1625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 5801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1625 IncrementalHoareTripleChecker+Valid, 4176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:34,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 3270 Invalid, 5801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1625 Valid, 4176 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-13 13:30:34,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238721 states. [2022-07-13 13:30:36,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238721 to 231778. [2022-07-13 13:30:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231778 states, 231777 states have (on average 1.1421021067664177) internal successors, (264713), 231777 states have internal predecessors, (264713), 0 states have call successors, (0), 0 states 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 13:30:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231778 states to 231778 states and 264713 transitions. [2022-07-13 13:30:37,447 INFO L78 Accepts]: Start accepts. Automaton has 231778 states and 264713 transitions. Word has length 894 [2022-07-13 13:30:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:37,448 INFO L495 AbstractCegarLoop]: Abstraction has 231778 states and 264713 transitions. [2022-07-13 13:30:37,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 13:30:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 231778 states and 264713 transitions. [2022-07-13 13:30:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2022-07-13 13:30:37,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:37,458 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 13:30:37,458 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1588434996, now seen corresponding path program 1 times [2022-07-13 13:30:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:37,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485487050] [2022-07-13 13:30:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-13 13:30:37,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:37,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485487050] [2022-07-13 13:30:37,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485487050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:37,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:37,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 13:30:37,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976347111] [2022-07-13 13:30:37,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:37,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:30:37,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:30:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:37,896 INFO L87 Difference]: Start difference. First operand 231778 states and 264713 transitions. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 13:30:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:48,930 INFO L93 Difference]: Finished difference Result 694266 states and 808295 transitions. [2022-07-13 13:30:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:30:48,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 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 946 [2022-07-13 13:30:48,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:49,888 INFO L225 Difference]: With dead ends: 694266 [2022-07-13 13:30:49,888 INFO L226 Difference]: Without dead ends: 465220 [2022-07-13 13:30:49,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:50,002 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 5274 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 5983 mSolverCounterSat, 4379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5274 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 10362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4379 IncrementalHoareTripleChecker+Valid, 5983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:50,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5274 Valid, 911 Invalid, 10362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4379 Valid, 5983 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-07-13 13:30:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465220 states. [2022-07-13 13:30:54,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465220 to 465199. [2022-07-13 13:30:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465199 states, 465198 states have (on average 1.1293900661653749) internal successors, (525390), 465198 states have internal predecessors, (525390), 0 states have call successors, (0), 0 states 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 13:30:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465199 states to 465199 states and 525390 transitions. [2022-07-13 13:30:56,172 INFO L78 Accepts]: Start accepts. Automaton has 465199 states and 525390 transitions. Word has length 946 [2022-07-13 13:30:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:56,173 INFO L495 AbstractCegarLoop]: Abstraction has 465199 states and 525390 transitions. [2022-07-13 13:30:56,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 13:30:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 465199 states and 525390 transitions. [2022-07-13 13:30:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2022-07-13 13:30:56,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:56,192 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:56,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 13:30:56,193 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1914084469, now seen corresponding path program 1 times [2022-07-13 13:30:56,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:56,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443150498] [2022-07-13 13:30:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:56,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 809 proven. 218 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-13 13:30:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:57,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443150498] [2022-07-13 13:30:57,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443150498] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:30:57,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714684432] [2022-07-13 13:30:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:30:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:30:57,214 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 13:30:57,215 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 13:30:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:57,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 13:30:57,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:30:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 952 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-13 13:30:58,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:30:58,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714684432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:58,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:30:58,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-13 13:30:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60547348] [2022-07-13 13:30:58,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:58,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:30:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:30:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:30:58,008 INFO L87 Difference]: Start difference. First operand 465199 states and 525390 transitions. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states 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 13:31:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:31:06,783 INFO L93 Difference]: Finished difference Result 1054605 states and 1189985 transitions. [2022-07-13 13:31:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:31:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 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 1158 [2022-07-13 13:31:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:31:07,762 INFO L225 Difference]: With dead ends: 1054605 [2022-07-13 13:31:07,762 INFO L226 Difference]: Without dead ends: 585307 [2022-07-13 13:31:07,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:31:07,940 INFO L413 NwaCegarLoop]: 2606 mSDtfsCounter, 1408 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 1636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-13 13:31:07,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2694 Invalid, 5422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-13 13:31:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585307 states. [2022-07-13 13:31:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585307 to 574373. [2022-07-13 13:31:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574373 states, 574372 states have (on average 1.1050469034005836) internal successors, (634708), 574372 states have internal predecessors, (634708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)