./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.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 06e766f2b0fb57f78717a4ab927a7f5c398a4eef6e5769d710eaeddfb253f7dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 11:03:51,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:03:51,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:03:51,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:03:51,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:03:51,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:03:51,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:03:51,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:03:51,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:03:51,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:03:51,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:03:51,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:03:51,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:03:51,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:03:51,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:03:51,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:03:51,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:03:51,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:03:51,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:03:51,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:03:51,350 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:03:51,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:03:51,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:03:51,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:03:51,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:03:51,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:03:51,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:03:51,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:03:51,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:03:51,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:03:51,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:03:51,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:03:51,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:03:51,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:03:51,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:03:51,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:03:51,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:03:51,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:03:51,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:03:51,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:03:51,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:03:51,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:03:51,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:03:51,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:03:51,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:03:51,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:03:51,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:03:51,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:03:51,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:03:51,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:03:51,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:03:51,412 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:03:51,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:03:51,413 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:03:51,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:03:51,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:03:51,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:03:51,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:03:51,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:03:51,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:03:51,414 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:03:51,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:03:51,416 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:03:51,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:03:51,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:03:51,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:03:51,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:03:51,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:03:51,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:03:51,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:03:51,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:03:51,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:03:51,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:03:51,418 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:03:51,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:03:51,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:03:51,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06e766f2b0fb57f78717a4ab927a7f5c398a4eef6e5769d710eaeddfb253f7dd [2022-07-19 11:03:51,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:03:51,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:03:51,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:03:51,663 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:03:51,665 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:03:51,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c [2022-07-19 11:03:51,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3aa4033/fde6c3a24722484c9a4eccd1bd4ee87a/FLAG60bf5e276 [2022-07-19 11:03:52,258 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:03:52,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c [2022-07-19 11:03:52,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3aa4033/fde6c3a24722484c9a4eccd1bd4ee87a/FLAG60bf5e276 [2022-07-19 11:03:52,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3aa4033/fde6c3a24722484c9a4eccd1bd4ee87a [2022-07-19 11:03:52,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:03:52,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:03:52,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:03:52,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:03:52,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:03:52,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:03:52" (1/1) ... [2022-07-19 11:03:52,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650ac14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:52, skipping insertion in model container [2022-07-19 11:03:52,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:03:52" (1/1) ... [2022-07-19 11:03:52,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:03:52,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:03:53,135 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/openssl/s3_srvr.blast.10.i.cil-2.c[73311,73324] [2022-07-19 11:03:53,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:03:53,169 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:03:53,310 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/openssl/s3_srvr.blast.10.i.cil-2.c[73311,73324] [2022-07-19 11:03:53,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:03:53,326 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:03:53,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53 WrapperNode [2022-07-19 11:03:53,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:03:53,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:03:53,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:03:53,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:03:53,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,418 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 787 [2022-07-19 11:03:53,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:03:53,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:03:53,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:03:53,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:03:53,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:03:53,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:03:53,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:03:53,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:03:53,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (1/1) ... [2022-07-19 11:03:53,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:03:53,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:03:53,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 11:03:53,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 11:03:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:03:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 11:03:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 11:03:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 11:03:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 11:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:03:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 11:03:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:03:53,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:03:53,741 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:03:53,743 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:03:53,758 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-19 11:03:56,508 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-19 11:03:56,509 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-19 11:03:56,509 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:03:56,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:03:56,515 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:03:56,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:03:56 BoogieIcfgContainer [2022-07-19 11:03:56,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:03:56,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:03:56,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:03:56,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:03:56,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:03:52" (1/3) ... [2022-07-19 11:03:56,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552427a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:03:56, skipping insertion in model container [2022-07-19 11:03:56,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:53" (2/3) ... [2022-07-19 11:03:56,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552427a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:03:56, skipping insertion in model container [2022-07-19 11:03:56,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:03:56" (3/3) ... [2022-07-19 11:03:56,525 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-2.c [2022-07-19 11:03:56,537 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:03:56,538 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:03:56,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:03:56,586 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@3e8b78e6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@711806cd [2022-07-19 11:03:56,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:03:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-19 11:03:56,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:56,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:56,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1692155939, now seen corresponding path program 1 times [2022-07-19 11:03:56,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:56,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792134818] [2022-07-19 11:03:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:56,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:57,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:57,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792134818] [2022-07-19 11:03:57,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792134818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:57,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:57,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737724721] [2022-07-19 11:03:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:57,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:57,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:57,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:57,226 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:58,116 INFO L93 Difference]: Finished difference Result 412 states and 698 transitions. [2022-07-19 11:03:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:58,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-19 11:03:58,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:58,136 INFO L225 Difference]: With dead ends: 412 [2022-07-19 11:03:58,136 INFO L226 Difference]: Without dead ends: 250 [2022-07-19 11:03:58,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:58,145 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 150 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:58,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 423 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:03:58,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-19 11:03:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 174. [2022-07-19 11:03:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.6011560693641618) internal successors, (277), 173 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 277 transitions. [2022-07-19 11:03:58,219 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 277 transitions. Word has length 43 [2022-07-19 11:03:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:58,220 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 277 transitions. [2022-07-19 11:03:58,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 277 transitions. [2022-07-19 11:03:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 11:03:58,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:58,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:58,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 11:03:58,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:58,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash 910693922, now seen corresponding path program 1 times [2022-07-19 11:03:58,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:58,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600653181] [2022-07-19 11:03:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:58,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600653181] [2022-07-19 11:03:58,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600653181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:58,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:58,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498936423] [2022-07-19 11:03:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:58,390 INFO L87 Difference]: Start difference. First operand 174 states and 277 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:58,948 INFO L93 Difference]: Finished difference Result 366 states and 581 transitions. [2022-07-19 11:03:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:58,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-07-19 11:03:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:58,951 INFO L225 Difference]: With dead ends: 366 [2022-07-19 11:03:58,951 INFO L226 Difference]: Without dead ends: 202 [2022-07-19 11:03:58,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:58,953 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 22 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:58,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 451 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:03:58,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-19 11:03:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2022-07-19 11:03:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.608695652173913) internal successors, (296), 184 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 296 transitions. [2022-07-19 11:03:58,965 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 296 transitions. Word has length 44 [2022-07-19 11:03:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:58,966 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 296 transitions. [2022-07-19 11:03:58,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 296 transitions. [2022-07-19 11:03:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 11:03:58,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:58,970 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:03:58,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 11:03:58,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:58,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:58,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1232633144, now seen corresponding path program 1 times [2022-07-19 11:03:58,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:58,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929270531] [2022-07-19 11:03:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:59,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:59,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929270531] [2022-07-19 11:03:59,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929270531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:59,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:59,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:59,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000975862] [2022-07-19 11:03:59,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:59,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:59,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:59,186 INFO L87 Difference]: Start difference. First operand 185 states and 296 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:00,561 INFO L93 Difference]: Finished difference Result 503 states and 809 transitions. [2022-07-19 11:04:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:00,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-19 11:04:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:00,564 INFO L225 Difference]: With dead ends: 503 [2022-07-19 11:04:00,564 INFO L226 Difference]: Without dead ends: 339 [2022-07-19 11:04:00,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:00,566 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 139 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:00,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 588 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 11:04:00,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-19 11:04:00,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 217. [2022-07-19 11:04:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.6064814814814814) internal successors, (347), 216 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 347 transitions. [2022-07-19 11:04:00,577 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 347 transitions. Word has length 57 [2022-07-19 11:04:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:00,578 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 347 transitions. [2022-07-19 11:04:00,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 347 transitions. [2022-07-19 11:04:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:00,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:00,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:00,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 11:04:00,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1458561385, now seen corresponding path program 1 times [2022-07-19 11:04:00,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:00,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719423514] [2022-07-19 11:04:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:00,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:00,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719423514] [2022-07-19 11:04:00,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719423514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:00,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:00,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:00,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386405382] [2022-07-19 11:04:00,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:00,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:00,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:00,689 INFO L87 Difference]: Start difference. First operand 217 states and 347 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:01,621 INFO L93 Difference]: Finished difference Result 511 states and 812 transitions. [2022-07-19 11:04:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-19 11:04:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:01,625 INFO L225 Difference]: With dead ends: 511 [2022-07-19 11:04:01,625 INFO L226 Difference]: Without dead ends: 315 [2022-07-19 11:04:01,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:01,626 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 144 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:01,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 316 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-19 11:04:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 217. [2022-07-19 11:04:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.587962962962963) internal successors, (343), 216 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2022-07-19 11:04:01,647 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 58 [2022-07-19 11:04:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:01,648 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2022-07-19 11:04:01,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2022-07-19 11:04:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:01,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:01,652 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:01,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 11:04:01,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:01,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1788895107, now seen corresponding path program 1 times [2022-07-19 11:04:01,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:01,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782561019] [2022-07-19 11:04:01,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:01,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:01,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:01,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782561019] [2022-07-19 11:04:01,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782561019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:01,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:01,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:01,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483830964] [2022-07-19 11:04:01,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:01,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:01,766 INFO L87 Difference]: Start difference. First operand 217 states and 343 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:02,628 INFO L93 Difference]: Finished difference Result 429 states and 675 transitions. [2022-07-19 11:04:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:02,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-19 11:04:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:02,630 INFO L225 Difference]: With dead ends: 429 [2022-07-19 11:04:02,630 INFO L226 Difference]: Without dead ends: 233 [2022-07-19 11:04:02,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:02,632 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 26 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:02,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 455 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-19 11:04:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 217. [2022-07-19 11:04:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5833333333333333) internal successors, (342), 216 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 342 transitions. [2022-07-19 11:04:02,639 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 342 transitions. Word has length 58 [2022-07-19 11:04:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:02,639 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 342 transitions. [2022-07-19 11:04:02,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 342 transitions. [2022-07-19 11:04:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:02,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:02,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:02,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 11:04:02,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash 653028812, now seen corresponding path program 1 times [2022-07-19 11:04:02,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:02,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375108965] [2022-07-19 11:04:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:02,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:02,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:02,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375108965] [2022-07-19 11:04:02,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375108965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:02,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:02,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:02,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665431122] [2022-07-19 11:04:02,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:02,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:02,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:02,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:02,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:02,795 INFO L87 Difference]: Start difference. First operand 217 states and 342 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:03,435 INFO L93 Difference]: Finished difference Result 428 states and 673 transitions. [2022-07-19 11:04:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:03,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-19 11:04:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:03,436 INFO L225 Difference]: With dead ends: 428 [2022-07-19 11:04:03,437 INFO L226 Difference]: Without dead ends: 232 [2022-07-19 11:04:03,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:03,438 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 19 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:03,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 457 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-19 11:04:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 217. [2022-07-19 11:04:03,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5787037037037037) internal successors, (341), 216 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 341 transitions. [2022-07-19 11:04:03,446 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 341 transitions. Word has length 58 [2022-07-19 11:04:03,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:03,446 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 341 transitions. [2022-07-19 11:04:03,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,446 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 341 transitions. [2022-07-19 11:04:03,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:03,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:03,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:03,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 11:04:03,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:03,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1973882124, now seen corresponding path program 1 times [2022-07-19 11:04:03,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:03,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269087856] [2022-07-19 11:04:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:03,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269087856] [2022-07-19 11:04:03,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269087856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:03,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:03,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282162883] [2022-07-19 11:04:03,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:03,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:03,570 INFO L87 Difference]: Start difference. First operand 217 states and 341 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:04,310 INFO L93 Difference]: Finished difference Result 511 states and 803 transitions. [2022-07-19 11:04:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:04,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-19 11:04:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:04,313 INFO L225 Difference]: With dead ends: 511 [2022-07-19 11:04:04,314 INFO L226 Difference]: Without dead ends: 315 [2022-07-19 11:04:04,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:04,315 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:04,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 316 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:04,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-19 11:04:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 218. [2022-07-19 11:04:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.566820276497696) internal successors, (340), 217 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) [2022-07-19 11:04:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 340 transitions. [2022-07-19 11:04:04,323 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 340 transitions. Word has length 58 [2022-07-19 11:04:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:04,323 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 340 transitions. [2022-07-19 11:04:04,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 340 transitions. [2022-07-19 11:04:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:04:04,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:04,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:04,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 11:04:04,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:04,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash 477040383, now seen corresponding path program 1 times [2022-07-19 11:04:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:04,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830160935] [2022-07-19 11:04:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:04,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830160935] [2022-07-19 11:04:04,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830160935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:04,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:04,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759673389] [2022-07-19 11:04:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:04,426 INFO L87 Difference]: Start difference. First operand 218 states and 340 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:05,131 INFO L93 Difference]: Finished difference Result 428 states and 669 transitions. [2022-07-19 11:04:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:05,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-19 11:04:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:05,132 INFO L225 Difference]: With dead ends: 428 [2022-07-19 11:04:05,133 INFO L226 Difference]: Without dead ends: 231 [2022-07-19 11:04:05,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:05,134 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 22 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:05,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 461 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-19 11:04:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2022-07-19 11:04:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5622119815668203) internal successors, (339), 217 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 339 transitions. [2022-07-19 11:04:05,140 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 339 transitions. Word has length 59 [2022-07-19 11:04:05,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:05,141 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 339 transitions. [2022-07-19 11:04:05,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 339 transitions. [2022-07-19 11:04:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 11:04:05,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:05,142 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:05,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 11:04:05,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1137447710, now seen corresponding path program 1 times [2022-07-19 11:04:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:05,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863143946] [2022-07-19 11:04:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:05,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:05,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:05,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863143946] [2022-07-19 11:04:05,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863143946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:05,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:05,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:05,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277288680] [2022-07-19 11:04:05,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:05,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:05,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:05,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:05,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:05,229 INFO L87 Difference]: Start difference. First operand 218 states and 339 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:06,834 INFO L93 Difference]: Finished difference Result 428 states and 668 transitions. [2022-07-19 11:04:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-19 11:04:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:06,836 INFO L225 Difference]: With dead ends: 428 [2022-07-19 11:04:06,836 INFO L226 Difference]: Without dead ends: 231 [2022-07-19 11:04:06,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:06,837 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 20 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:06,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 461 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:04:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-19 11:04:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2022-07-19 11:04:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5576036866359446) internal successors, (338), 217 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 338 transitions. [2022-07-19 11:04:06,843 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 338 transitions. Word has length 60 [2022-07-19 11:04:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:06,843 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 338 transitions. [2022-07-19 11:04:06,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 338 transitions. [2022-07-19 11:04:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 11:04:06,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:06,844 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:06,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 11:04:06,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1486530822, now seen corresponding path program 1 times [2022-07-19 11:04:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:06,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812003446] [2022-07-19 11:04:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:06,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812003446] [2022-07-19 11:04:06,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812003446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:06,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:06,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339639130] [2022-07-19 11:04:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:06,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:06,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:06,943 INFO L87 Difference]: Start difference. First operand 218 states and 338 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:08,047 INFO L93 Difference]: Finished difference Result 418 states and 654 transitions. [2022-07-19 11:04:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:08,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-19 11:04:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:08,048 INFO L225 Difference]: With dead ends: 418 [2022-07-19 11:04:08,049 INFO L226 Difference]: Without dead ends: 221 [2022-07-19 11:04:08,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:08,050 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 11 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:08,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 475 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:04:08,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-19 11:04:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2022-07-19 11:04:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5529953917050692) internal successors, (337), 217 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 337 transitions. [2022-07-19 11:04:08,055 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 337 transitions. Word has length 61 [2022-07-19 11:04:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:08,056 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 337 transitions. [2022-07-19 11:04:08,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 337 transitions. [2022-07-19 11:04:08,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 11:04:08,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:08,057 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:08,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 11:04:08,057 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:08,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash -813532014, now seen corresponding path program 1 times [2022-07-19 11:04:08,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:08,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521357915] [2022-07-19 11:04:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:08,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:08,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:08,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521357915] [2022-07-19 11:04:08,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521357915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:08,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:08,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:08,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553839355] [2022-07-19 11:04:08,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:08,151 INFO L87 Difference]: Start difference. First operand 218 states and 337 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:09,203 INFO L93 Difference]: Finished difference Result 512 states and 797 transitions. [2022-07-19 11:04:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-19 11:04:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:09,205 INFO L225 Difference]: With dead ends: 512 [2022-07-19 11:04:09,205 INFO L226 Difference]: Without dead ends: 315 [2022-07-19 11:04:09,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:09,206 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 114 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:09,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 330 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:04:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-19 11:04:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 241. [2022-07-19 11:04:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5916666666666666) internal successors, (382), 240 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 382 transitions. [2022-07-19 11:04:09,226 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 382 transitions. Word has length 61 [2022-07-19 11:04:09,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:09,228 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 382 transitions. [2022-07-19 11:04:09,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 382 transitions. [2022-07-19 11:04:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 11:04:09,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:09,230 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:09,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 11:04:09,230 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:09,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1848715960, now seen corresponding path program 1 times [2022-07-19 11:04:09,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:09,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740474216] [2022-07-19 11:04:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:09,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:09,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:09,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740474216] [2022-07-19 11:04:09,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740474216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:09,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:09,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:09,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679482801] [2022-07-19 11:04:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:09,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:09,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:09,338 INFO L87 Difference]: Start difference. First operand 241 states and 382 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:10,165 INFO L93 Difference]: Finished difference Result 611 states and 977 transitions. [2022-07-19 11:04:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:10,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-07-19 11:04:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:10,168 INFO L225 Difference]: With dead ends: 611 [2022-07-19 11:04:10,168 INFO L226 Difference]: Without dead ends: 391 [2022-07-19 11:04:10,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:10,169 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 120 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:10,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 326 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-07-19 11:04:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 305. [2022-07-19 11:04:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.618421052631579) internal successors, (492), 304 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 492 transitions. [2022-07-19 11:04:10,178 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 492 transitions. Word has length 89 [2022-07-19 11:04:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:10,178 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 492 transitions. [2022-07-19 11:04:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 492 transitions. [2022-07-19 11:04:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 11:04:10,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:10,180 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:10,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 11:04:10,180 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1555801769, now seen corresponding path program 1 times [2022-07-19 11:04:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:10,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928078896] [2022-07-19 11:04:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:10,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:10,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928078896] [2022-07-19 11:04:10,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928078896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:10,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:10,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:10,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914485423] [2022-07-19 11:04:10,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:10,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:10,306 INFO L87 Difference]: Start difference. First operand 305 states and 492 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:11,188 INFO L93 Difference]: Finished difference Result 703 states and 1130 transitions. [2022-07-19 11:04:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:11,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-07-19 11:04:11,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:11,191 INFO L225 Difference]: With dead ends: 703 [2022-07-19 11:04:11,191 INFO L226 Difference]: Without dead ends: 419 [2022-07-19 11:04:11,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:11,192 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 116 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:11,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 314 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-07-19 11:04:11,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 342. [2022-07-19 11:04:11,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.6275659824046922) internal successors, (555), 341 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 555 transitions. [2022-07-19 11:04:11,201 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 555 transitions. Word has length 94 [2022-07-19 11:04:11,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:11,201 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 555 transitions. [2022-07-19 11:04:11,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 555 transitions. [2022-07-19 11:04:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 11:04:11,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:11,203 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 11:04:11,203 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash 430223126, now seen corresponding path program 1 times [2022-07-19 11:04:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:11,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676014055] [2022-07-19 11:04:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 11:04:11,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:11,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676014055] [2022-07-19 11:04:11,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676014055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:11,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:11,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:11,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085330127] [2022-07-19 11:04:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:11,305 INFO L87 Difference]: Start difference. First operand 342 states and 555 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:11,847 INFO L93 Difference]: Finished difference Result 703 states and 1145 transitions. [2022-07-19 11:04:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:11,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-19 11:04:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:11,849 INFO L225 Difference]: With dead ends: 703 [2022-07-19 11:04:11,849 INFO L226 Difference]: Without dead ends: 382 [2022-07-19 11:04:11,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:11,850 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 31 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:11,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 479 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-19 11:04:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-19 11:04:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6253443526170799) internal successors, (590), 363 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 590 transitions. [2022-07-19 11:04:11,859 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 590 transitions. Word has length 95 [2022-07-19 11:04:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:11,860 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 590 transitions. [2022-07-19 11:04:11,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 590 transitions. [2022-07-19 11:04:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 11:04:11,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:11,861 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 11:04:11,862 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash -174040009, now seen corresponding path program 1 times [2022-07-19 11:04:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:11,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240382800] [2022-07-19 11:04:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:11,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:11,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240382800] [2022-07-19 11:04:11,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240382800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:11,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:11,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:11,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154797307] [2022-07-19 11:04:11,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:11,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:11,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:11,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:11,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:11,957 INFO L87 Difference]: Start difference. First operand 364 states and 590 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:12,711 INFO L93 Difference]: Finished difference Result 725 states and 1179 transitions. [2022-07-19 11:04:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:12,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 109 [2022-07-19 11:04:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:12,713 INFO L225 Difference]: With dead ends: 725 [2022-07-19 11:04:12,713 INFO L226 Difference]: Without dead ends: 382 [2022-07-19 11:04:12,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:12,714 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 40 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:12,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 479 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:12,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-19 11:04:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-19 11:04:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6225895316804408) internal successors, (589), 363 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 589 transitions. [2022-07-19 11:04:12,723 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 589 transitions. Word has length 109 [2022-07-19 11:04:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:12,724 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 589 transitions. [2022-07-19 11:04:12,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,724 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 589 transitions. [2022-07-19 11:04:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 11:04:12,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:12,725 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-19 11:04:12,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 11:04:12,726 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash -851994560, now seen corresponding path program 1 times [2022-07-19 11:04:12,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:12,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438394998] [2022-07-19 11:04:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:12,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:12,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:12,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438394998] [2022-07-19 11:04:12,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438394998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:12,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:12,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:12,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324252507] [2022-07-19 11:04:12,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:12,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:12,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:12,854 INFO L87 Difference]: Start difference. First operand 364 states and 589 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:13,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:13,427 INFO L93 Difference]: Finished difference Result 780 states and 1254 transitions. [2022-07-19 11:04:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:13,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 109 [2022-07-19 11:04:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:13,429 INFO L225 Difference]: With dead ends: 780 [2022-07-19 11:04:13,429 INFO L226 Difference]: Without dead ends: 437 [2022-07-19 11:04:13,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:13,430 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:13,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:13,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-19 11:04:13,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-19 11:04:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.606060606060606) internal successors, (583), 363 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 583 transitions. [2022-07-19 11:04:13,440 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 583 transitions. Word has length 109 [2022-07-19 11:04:13,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:13,440 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 583 transitions. [2022-07-19 11:04:13,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:13,440 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 583 transitions. [2022-07-19 11:04:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 11:04:13,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:13,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:13,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 11:04:13,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:13,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:13,443 INFO L85 PathProgramCache]: Analyzing trace with hash 262499795, now seen corresponding path program 1 times [2022-07-19 11:04:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:13,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183602209] [2022-07-19 11:04:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:13,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:13,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:13,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183602209] [2022-07-19 11:04:13,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183602209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:13,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:13,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:13,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101517864] [2022-07-19 11:04:13,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:13,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:13,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:13,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:13,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:13,547 INFO L87 Difference]: Start difference. First operand 364 states and 583 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:14,405 INFO L93 Difference]: Finished difference Result 780 states and 1242 transitions. [2022-07-19 11:04:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:14,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-19 11:04:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:14,408 INFO L225 Difference]: With dead ends: 780 [2022-07-19 11:04:14,408 INFO L226 Difference]: Without dead ends: 437 [2022-07-19 11:04:14,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:14,409 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 139 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:14,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-19 11:04:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-19 11:04:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5867768595041323) internal successors, (576), 363 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 576 transitions. [2022-07-19 11:04:14,417 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 576 transitions. Word has length 110 [2022-07-19 11:04:14,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:14,418 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 576 transitions. [2022-07-19 11:04:14,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 576 transitions. [2022-07-19 11:04:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 11:04:14,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:14,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:14,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 11:04:14,420 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:14,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1945924334, now seen corresponding path program 1 times [2022-07-19 11:04:14,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:14,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86910809] [2022-07-19 11:04:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:14,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:14,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:14,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86910809] [2022-07-19 11:04:14,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86910809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:14,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:14,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:14,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320002419] [2022-07-19 11:04:14,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:14,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:14,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:14,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:14,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:14,513 INFO L87 Difference]: Start difference. First operand 364 states and 576 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:15,773 INFO L93 Difference]: Finished difference Result 780 states and 1228 transitions. [2022-07-19 11:04:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:15,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-19 11:04:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:15,775 INFO L225 Difference]: With dead ends: 780 [2022-07-19 11:04:15,775 INFO L226 Difference]: Without dead ends: 437 [2022-07-19 11:04:15,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:15,776 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:15,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:04:15,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-19 11:04:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-19 11:04:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5674931129476584) internal successors, (569), 363 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 569 transitions. [2022-07-19 11:04:15,789 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 569 transitions. Word has length 111 [2022-07-19 11:04:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:15,789 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 569 transitions. [2022-07-19 11:04:15,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 569 transitions. [2022-07-19 11:04:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 11:04:15,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:15,791 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:15,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 11:04:15,791 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:15,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash -248884466, now seen corresponding path program 1 times [2022-07-19 11:04:15,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:15,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337281786] [2022-07-19 11:04:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:15,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:15,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:15,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337281786] [2022-07-19 11:04:15,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337281786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:15,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:15,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913350130] [2022-07-19 11:04:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:15,894 INFO L87 Difference]: Start difference. First operand 364 states and 569 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:17,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:17,436 INFO L93 Difference]: Finished difference Result 780 states and 1214 transitions. [2022-07-19 11:04:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:17,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 112 [2022-07-19 11:04:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:17,438 INFO L225 Difference]: With dead ends: 780 [2022-07-19 11:04:17,438 INFO L226 Difference]: Without dead ends: 437 [2022-07-19 11:04:17,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:17,439 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:17,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:04:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-19 11:04:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-19 11:04:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5482093663911847) internal successors, (562), 363 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 562 transitions. [2022-07-19 11:04:17,448 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 562 transitions. Word has length 112 [2022-07-19 11:04:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:17,448 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 562 transitions. [2022-07-19 11:04:17,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 562 transitions. [2022-07-19 11:04:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 11:04:17,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:17,449 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:17,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 11:04:17,450 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1564451825, now seen corresponding path program 1 times [2022-07-19 11:04:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:17,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753422141] [2022-07-19 11:04:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:17,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753422141] [2022-07-19 11:04:17,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753422141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:17,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:17,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499241667] [2022-07-19 11:04:17,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:17,567 INFO L87 Difference]: Start difference. First operand 364 states and 562 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:18,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:18,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:18,920 INFO L93 Difference]: Finished difference Result 797 states and 1232 transitions. [2022-07-19 11:04:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:18,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-19 11:04:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:18,922 INFO L225 Difference]: With dead ends: 797 [2022-07-19 11:04:18,922 INFO L226 Difference]: Without dead ends: 454 [2022-07-19 11:04:18,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:18,928 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 74 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:18,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 447 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 11:04:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-19 11:04:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 404. [2022-07-19 11:04:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5508684863523574) internal successors, (625), 403 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 625 transitions. [2022-07-19 11:04:18,945 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 625 transitions. Word has length 117 [2022-07-19 11:04:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:18,945 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 625 transitions. [2022-07-19 11:04:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 625 transitions. [2022-07-19 11:04:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 11:04:18,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:18,947 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 11:04:18,947 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1843292625, now seen corresponding path program 1 times [2022-07-19 11:04:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:18,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747170940] [2022-07-19 11:04:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:18,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 11:04:19,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:19,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747170940] [2022-07-19 11:04:19,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747170940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:19,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:19,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:19,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475427627] [2022-07-19 11:04:19,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:19,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:19,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:19,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:19,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:19,046 INFO L87 Difference]: Start difference. First operand 404 states and 625 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:20,168 INFO L93 Difference]: Finished difference Result 832 states and 1289 transitions. [2022-07-19 11:04:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-19 11:04:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:20,170 INFO L225 Difference]: With dead ends: 832 [2022-07-19 11:04:20,170 INFO L226 Difference]: Without dead ends: 449 [2022-07-19 11:04:20,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:20,171 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 33 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:20,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 567 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:04:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-07-19 11:04:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 428. [2022-07-19 11:04:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.5456674473067915) internal successors, (660), 427 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 660 transitions. [2022-07-19 11:04:20,181 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 660 transitions. Word has length 117 [2022-07-19 11:04:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:20,181 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 660 transitions. [2022-07-19 11:04:20,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 660 transitions. [2022-07-19 11:04:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 11:04:20,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:20,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:20,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 11:04:20,183 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1399752639, now seen corresponding path program 1 times [2022-07-19 11:04:20,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:20,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312070268] [2022-07-19 11:04:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:20,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:20,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312070268] [2022-07-19 11:04:20,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312070268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:20,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:20,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824561505] [2022-07-19 11:04:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:20,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:20,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:20,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:20,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:20,294 INFO L87 Difference]: Start difference. First operand 428 states and 660 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:21,092 INFO L93 Difference]: Finished difference Result 948 states and 1460 transitions. [2022-07-19 11:04:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:21,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 125 [2022-07-19 11:04:21,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:21,095 INFO L225 Difference]: With dead ends: 948 [2022-07-19 11:04:21,095 INFO L226 Difference]: Without dead ends: 541 [2022-07-19 11:04:21,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:21,096 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 105 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:21,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 317 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-19 11:04:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 471. [2022-07-19 11:04:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.5510638297872341) internal successors, (729), 470 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 729 transitions. [2022-07-19 11:04:21,108 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 729 transitions. Word has length 125 [2022-07-19 11:04:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:21,108 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 729 transitions. [2022-07-19 11:04:21,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 729 transitions. [2022-07-19 11:04:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 11:04:21,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:21,110 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:21,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 11:04:21,110 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 309940842, now seen corresponding path program 1 times [2022-07-19 11:04:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:21,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410327408] [2022-07-19 11:04:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:21,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:21,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:21,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410327408] [2022-07-19 11:04:21,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410327408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:21,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:21,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185553495] [2022-07-19 11:04:21,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:21,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:21,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:21,214 INFO L87 Difference]: Start difference. First operand 471 states and 729 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:22,220 INFO L93 Difference]: Finished difference Result 994 states and 1534 transitions. [2022-07-19 11:04:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:22,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 126 [2022-07-19 11:04:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:22,221 INFO L225 Difference]: With dead ends: 994 [2022-07-19 11:04:22,222 INFO L226 Difference]: Without dead ends: 542 [2022-07-19 11:04:22,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:22,223 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 106 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:22,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 316 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:04:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-19 11:04:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 473. [2022-07-19 11:04:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5508474576271187) internal successors, (732), 472 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 732 transitions. [2022-07-19 11:04:22,233 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 732 transitions. Word has length 126 [2022-07-19 11:04:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 732 transitions. [2022-07-19 11:04:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 732 transitions. [2022-07-19 11:04:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 11:04:22,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:22,236 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-19 11:04:22,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 11:04:22,236 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:22,236 INFO L85 PathProgramCache]: Analyzing trace with hash -474729006, now seen corresponding path program 1 times [2022-07-19 11:04:22,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:22,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308053660] [2022-07-19 11:04:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 11:04:22,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:22,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308053660] [2022-07-19 11:04:22,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308053660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:22,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:22,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564503275] [2022-07-19 11:04:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:22,354 INFO L87 Difference]: Start difference. First operand 473 states and 732 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:23,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:24,627 INFO L93 Difference]: Finished difference Result 935 states and 1452 transitions. [2022-07-19 11:04:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:24,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 131 [2022-07-19 11:04:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:24,630 INFO L225 Difference]: With dead ends: 935 [2022-07-19 11:04:24,630 INFO L226 Difference]: Without dead ends: 483 [2022-07-19 11:04:24,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:24,631 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 144 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:24,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 338 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:04:24,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-19 11:04:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 482. [2022-07-19 11:04:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5446985446985446) internal successors, (743), 481 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 743 transitions. [2022-07-19 11:04:24,642 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 743 transitions. Word has length 131 [2022-07-19 11:04:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:24,642 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 743 transitions. [2022-07-19 11:04:24,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 743 transitions. [2022-07-19 11:04:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 11:04:24,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:24,644 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:24,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 11:04:24,644 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1091943493, now seen corresponding path program 1 times [2022-07-19 11:04:24,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:24,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304771653] [2022-07-19 11:04:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:24,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304771653] [2022-07-19 11:04:24,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304771653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:24,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:24,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687274470] [2022-07-19 11:04:24,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:24,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:24,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:24,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:24,767 INFO L87 Difference]: Start difference. First operand 482 states and 743 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:25,407 INFO L93 Difference]: Finished difference Result 1002 states and 1542 transitions. [2022-07-19 11:04:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:25,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-07-19 11:04:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:25,410 INFO L225 Difference]: With dead ends: 1002 [2022-07-19 11:04:25,410 INFO L226 Difference]: Without dead ends: 541 [2022-07-19 11:04:25,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:25,411 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 128 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:25,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 354 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-19 11:04:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 482. [2022-07-19 11:04:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.525987525987526) internal successors, (734), 481 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 734 transitions. [2022-07-19 11:04:25,423 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 734 transitions. Word has length 132 [2022-07-19 11:04:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:25,424 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 734 transitions. [2022-07-19 11:04:25,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 734 transitions. [2022-07-19 11:04:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 11:04:25,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:25,426 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:25,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 11:04:25,426 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:25,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2126146282, now seen corresponding path program 1 times [2022-07-19 11:04:25,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:25,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24162049] [2022-07-19 11:04:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:25,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:04:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:25,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24162049] [2022-07-19 11:04:25,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24162049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:25,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:25,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538292975] [2022-07-19 11:04:25,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:25,552 INFO L87 Difference]: Start difference. First operand 482 states and 734 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:27,485 INFO L93 Difference]: Finished difference Result 977 states and 1489 transitions. [2022-07-19 11:04:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:27,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-07-19 11:04:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:27,487 INFO L225 Difference]: With dead ends: 977 [2022-07-19 11:04:27,487 INFO L226 Difference]: Without dead ends: 516 [2022-07-19 11:04:27,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:27,488 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 64 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:27,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 467 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 11:04:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-19 11:04:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 482. [2022-07-19 11:04:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.523908523908524) internal successors, (733), 481 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 733 transitions. [2022-07-19 11:04:27,500 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 733 transitions. Word has length 138 [2022-07-19 11:04:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:27,500 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 733 transitions. [2022-07-19 11:04:27,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 733 transitions. [2022-07-19 11:04:27,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 11:04:27,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:27,502 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:27,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 11:04:27,502 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:27,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1366121880, now seen corresponding path program 1 times [2022-07-19 11:04:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:27,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165002043] [2022-07-19 11:04:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:27,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:27,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165002043] [2022-07-19 11:04:27,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165002043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:27,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:27,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:27,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869407745] [2022-07-19 11:04:27,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:27,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:27,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:27,614 INFO L87 Difference]: Start difference. First operand 482 states and 733 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:29,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:29,799 INFO L93 Difference]: Finished difference Result 1002 states and 1522 transitions. [2022-07-19 11:04:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-19 11:04:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:29,801 INFO L225 Difference]: With dead ends: 1002 [2022-07-19 11:04:29,801 INFO L226 Difference]: Without dead ends: 541 [2022-07-19 11:04:29,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:29,802 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 115 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:29,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 364 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:04:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-19 11:04:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 482. [2022-07-19 11:04:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5093555093555093) internal successors, (726), 481 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 726 transitions. [2022-07-19 11:04:29,814 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 726 transitions. Word has length 139 [2022-07-19 11:04:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:29,814 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 726 transitions. [2022-07-19 11:04:29,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 726 transitions. [2022-07-19 11:04:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 11:04:29,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:29,816 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:29,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 11:04:29,816 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:29,817 INFO L85 PathProgramCache]: Analyzing trace with hash 984886832, now seen corresponding path program 1 times [2022-07-19 11:04:29,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:29,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311215704] [2022-07-19 11:04:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:29,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:04:29,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:29,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311215704] [2022-07-19 11:04:29,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311215704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:29,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:29,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:29,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402312881] [2022-07-19 11:04:29,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:29,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:29,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:29,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:29,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:29,913 INFO L87 Difference]: Start difference. First operand 482 states and 726 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:31,147 INFO L93 Difference]: Finished difference Result 975 states and 1471 transitions. [2022-07-19 11:04:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:31,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-19 11:04:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:31,149 INFO L225 Difference]: With dead ends: 975 [2022-07-19 11:04:31,149 INFO L226 Difference]: Without dead ends: 514 [2022-07-19 11:04:31,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:31,150 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 60 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:31,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 479 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:04:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-19 11:04:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 482. [2022-07-19 11:04:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5072765072765073) internal successors, (725), 481 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:31,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 725 transitions. [2022-07-19 11:04:31,161 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 725 transitions. Word has length 139 [2022-07-19 11:04:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:31,161 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 725 transitions. [2022-07-19 11:04:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 725 transitions. [2022-07-19 11:04:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 11:04:31,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:31,163 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:31,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 11:04:31,163 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:31,164 INFO L85 PathProgramCache]: Analyzing trace with hash 309390678, now seen corresponding path program 1 times [2022-07-19 11:04:31,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:31,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632440038] [2022-07-19 11:04:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:31,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 11:04:31,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:31,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632440038] [2022-07-19 11:04:31,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632440038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:31,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:31,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:31,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596093299] [2022-07-19 11:04:31,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:31,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:31,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:31,289 INFO L87 Difference]: Start difference. First operand 482 states and 725 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:31,843 INFO L93 Difference]: Finished difference Result 982 states and 1481 transitions. [2022-07-19 11:04:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:31,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-19 11:04:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:31,845 INFO L225 Difference]: With dead ends: 982 [2022-07-19 11:04:31,845 INFO L226 Difference]: Without dead ends: 521 [2022-07-19 11:04:31,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:31,848 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 27 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:31,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 555 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-19 11:04:31,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 508. [2022-07-19 11:04:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.5029585798816567) internal successors, (762), 507 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 762 transitions. [2022-07-19 11:04:31,861 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 762 transitions. Word has length 139 [2022-07-19 11:04:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:31,861 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 762 transitions. [2022-07-19 11:04:31,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 762 transitions. [2022-07-19 11:04:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 11:04:31,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:31,863 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 11:04:31,864 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:31,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1970724841, now seen corresponding path program 1 times [2022-07-19 11:04:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:31,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012572967] [2022-07-19 11:04:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:31,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:04:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:31,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012572967] [2022-07-19 11:04:31,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012572967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:31,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:31,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583463511] [2022-07-19 11:04:31,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:31,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:31,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:31,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:31,978 INFO L87 Difference]: Start difference. First operand 508 states and 762 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:32,552 INFO L93 Difference]: Finished difference Result 1096 states and 1645 transitions. [2022-07-19 11:04:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:32,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-07-19 11:04:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:32,554 INFO L225 Difference]: With dead ends: 1096 [2022-07-19 11:04:32,554 INFO L226 Difference]: Without dead ends: 609 [2022-07-19 11:04:32,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:32,555 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 111 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:32,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 354 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-07-19 11:04:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 536. [2022-07-19 11:04:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4897196261682244) internal successors, (797), 535 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 797 transitions. [2022-07-19 11:04:32,585 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 797 transitions. Word has length 141 [2022-07-19 11:04:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:32,585 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 797 transitions. [2022-07-19 11:04:32,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,587 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 797 transitions. [2022-07-19 11:04:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-19 11:04:32,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:32,588 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:32,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 11:04:32,589 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:32,589 INFO L85 PathProgramCache]: Analyzing trace with hash 155364701, now seen corresponding path program 1 times [2022-07-19 11:04:32,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:32,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880459709] [2022-07-19 11:04:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:32,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:04:32,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:32,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880459709] [2022-07-19 11:04:32,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880459709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:32,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:32,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723029663] [2022-07-19 11:04:32,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:32,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:32,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:32,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:32,699 INFO L87 Difference]: Start difference. First operand 536 states and 797 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:33,637 INFO L93 Difference]: Finished difference Result 1075 states and 1600 transitions. [2022-07-19 11:04:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:33,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-07-19 11:04:33,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:33,639 INFO L225 Difference]: With dead ends: 1075 [2022-07-19 11:04:33,639 INFO L226 Difference]: Without dead ends: 560 [2022-07-19 11:04:33,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:33,641 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 51 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:33,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-19 11:04:33,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 536. [2022-07-19 11:04:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4878504672897197) internal successors, (796), 535 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 796 transitions. [2022-07-19 11:04:33,653 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 796 transitions. Word has length 142 [2022-07-19 11:04:33,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:33,653 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 796 transitions. [2022-07-19 11:04:33,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 796 transitions. [2022-07-19 11:04:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 11:04:33,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:33,655 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-19 11:04:33,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 11:04:33,655 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash -773365661, now seen corresponding path program 1 times [2022-07-19 11:04:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:33,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984522927] [2022-07-19 11:04:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:33,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:33,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984522927] [2022-07-19 11:04:33,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984522927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:33,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:33,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:33,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739874345] [2022-07-19 11:04:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:33,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:33,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:33,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:33,773 INFO L87 Difference]: Start difference. First operand 536 states and 796 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:34,267 INFO L93 Difference]: Finished difference Result 1075 states and 1598 transitions. [2022-07-19 11:04:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:34,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-07-19 11:04:34,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:34,269 INFO L225 Difference]: With dead ends: 1075 [2022-07-19 11:04:34,269 INFO L226 Difference]: Without dead ends: 560 [2022-07-19 11:04:34,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:34,270 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 53 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:34,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-19 11:04:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 536. [2022-07-19 11:04:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.485981308411215) internal successors, (795), 535 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 795 transitions. [2022-07-19 11:04:34,282 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 795 transitions. Word has length 145 [2022-07-19 11:04:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:34,283 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 795 transitions. [2022-07-19 11:04:34,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 795 transitions. [2022-07-19 11:04:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 11:04:34,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:34,284 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:34,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 11:04:34,285 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:34,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1914296137, now seen corresponding path program 1 times [2022-07-19 11:04:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:34,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597712626] [2022-07-19 11:04:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:34,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:34,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597712626] [2022-07-19 11:04:34,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597712626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:34,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:34,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:34,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746300698] [2022-07-19 11:04:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:34,398 INFO L87 Difference]: Start difference. First operand 536 states and 795 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:35,032 INFO L93 Difference]: Finished difference Result 1110 states and 1646 transitions. [2022-07-19 11:04:35,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:35,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-07-19 11:04:35,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:35,034 INFO L225 Difference]: With dead ends: 1110 [2022-07-19 11:04:35,035 INFO L226 Difference]: Without dead ends: 595 [2022-07-19 11:04:35,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:35,035 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 112 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:35,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-19 11:04:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 536. [2022-07-19 11:04:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4710280373831777) internal successors, (787), 535 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 787 transitions. [2022-07-19 11:04:35,047 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 787 transitions. Word has length 146 [2022-07-19 11:04:35,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:35,048 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 787 transitions. [2022-07-19 11:04:35,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 787 transitions. [2022-07-19 11:04:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 11:04:35,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:35,049 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:35,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 11:04:35,050 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash 436551973, now seen corresponding path program 1 times [2022-07-19 11:04:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:35,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815686087] [2022-07-19 11:04:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:35,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 11:04:35,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:35,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815686087] [2022-07-19 11:04:35,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815686087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:35,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:35,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:35,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907509554] [2022-07-19 11:04:35,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:35,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:35,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:35,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:35,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:35,161 INFO L87 Difference]: Start difference. First operand 536 states and 787 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:36,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:36,411 INFO L93 Difference]: Finished difference Result 1073 states and 1577 transitions. [2022-07-19 11:04:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:36,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-19 11:04:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:36,413 INFO L225 Difference]: With dead ends: 1073 [2022-07-19 11:04:36,413 INFO L226 Difference]: Without dead ends: 558 [2022-07-19 11:04:36,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:36,414 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 41 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:36,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 503 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:04:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-19 11:04:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 536. [2022-07-19 11:04:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.469158878504673) internal successors, (786), 535 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 786 transitions. [2022-07-19 11:04:36,426 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 786 transitions. Word has length 148 [2022-07-19 11:04:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:36,426 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 786 transitions. [2022-07-19 11:04:36,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 786 transitions. [2022-07-19 11:04:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 11:04:36,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:36,428 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:36,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 11:04:36,428 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:36,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:36,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1682736421, now seen corresponding path program 1 times [2022-07-19 11:04:36,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:36,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073317804] [2022-07-19 11:04:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:36,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:36,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:36,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073317804] [2022-07-19 11:04:36,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073317804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:36,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:36,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:36,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947140842] [2022-07-19 11:04:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:36,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:36,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:36,546 INFO L87 Difference]: Start difference. First operand 536 states and 786 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:38,440 INFO L93 Difference]: Finished difference Result 1152 states and 1692 transitions. [2022-07-19 11:04:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:38,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-19 11:04:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:38,442 INFO L225 Difference]: With dead ends: 1152 [2022-07-19 11:04:38,442 INFO L226 Difference]: Without dead ends: 637 [2022-07-19 11:04:38,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:38,443 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 105 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:38,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 338 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 11:04:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-19 11:04:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 569. [2022-07-19 11:04:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4630281690140845) internal successors, (831), 568 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 831 transitions. [2022-07-19 11:04:38,454 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 831 transitions. Word has length 148 [2022-07-19 11:04:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:38,454 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 831 transitions. [2022-07-19 11:04:38,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,455 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 831 transitions. [2022-07-19 11:04:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 11:04:38,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:38,456 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:38,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 11:04:38,456 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1171061050, now seen corresponding path program 1 times [2022-07-19 11:04:38,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:38,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535173245] [2022-07-19 11:04:38,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:38,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535173245] [2022-07-19 11:04:38,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535173245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:38,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:38,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121100767] [2022-07-19 11:04:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:38,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:38,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:38,577 INFO L87 Difference]: Start difference. First operand 569 states and 831 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:39,134 INFO L93 Difference]: Finished difference Result 1176 states and 1718 transitions. [2022-07-19 11:04:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:39,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-19 11:04:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:39,136 INFO L225 Difference]: With dead ends: 1176 [2022-07-19 11:04:39,136 INFO L226 Difference]: Without dead ends: 628 [2022-07-19 11:04:39,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:39,137 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 104 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:39,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:39,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-19 11:04:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 569. [2022-07-19 11:04:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.454225352112676) internal successors, (826), 568 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 826 transitions. [2022-07-19 11:04:39,150 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 826 transitions. Word has length 149 [2022-07-19 11:04:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:39,150 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 826 transitions. [2022-07-19 11:04:39,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 826 transitions. [2022-07-19 11:04:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 11:04:39,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:39,152 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:39,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 11:04:39,152 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:39,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2111739750, now seen corresponding path program 1 times [2022-07-19 11:04:39,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:39,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152200879] [2022-07-19 11:04:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:39,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 11:04:39,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:39,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152200879] [2022-07-19 11:04:39,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152200879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:39,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:39,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:39,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567137779] [2022-07-19 11:04:39,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:39,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:39,279 INFO L87 Difference]: Start difference. First operand 569 states and 826 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:39,890 INFO L93 Difference]: Finished difference Result 1176 states and 1708 transitions. [2022-07-19 11:04:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-19 11:04:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:39,892 INFO L225 Difference]: With dead ends: 1176 [2022-07-19 11:04:39,892 INFO L226 Difference]: Without dead ends: 628 [2022-07-19 11:04:39,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:39,893 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 101 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:39,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-19 11:04:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 569. [2022-07-19 11:04:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4454225352112675) internal successors, (821), 568 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 821 transitions. [2022-07-19 11:04:39,906 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 821 transitions. Word has length 149 [2022-07-19 11:04:39,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:39,906 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 821 transitions. [2022-07-19 11:04:39,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 821 transitions. [2022-07-19 11:04:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-19 11:04:39,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:39,908 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:39,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 11:04:39,909 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:39,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:39,909 INFO L85 PathProgramCache]: Analyzing trace with hash 111887274, now seen corresponding path program 1 times [2022-07-19 11:04:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:39,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657572830] [2022-07-19 11:04:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:39,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:40,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:40,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657572830] [2022-07-19 11:04:40,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657572830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:40,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:40,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026961072] [2022-07-19 11:04:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:40,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:40,019 INFO L87 Difference]: Start difference. First operand 569 states and 821 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:41,167 INFO L93 Difference]: Finished difference Result 1176 states and 1698 transitions. [2022-07-19 11:04:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:41,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 158 [2022-07-19 11:04:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:41,169 INFO L225 Difference]: With dead ends: 1176 [2022-07-19 11:04:41,169 INFO L226 Difference]: Without dead ends: 628 [2022-07-19 11:04:41,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:41,170 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 97 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:41,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 338 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:04:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-19 11:04:41,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 566. [2022-07-19 11:04:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.4424778761061947) internal successors, (815), 565 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 815 transitions. [2022-07-19 11:04:41,181 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 815 transitions. Word has length 158 [2022-07-19 11:04:41,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:41,181 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 815 transitions. [2022-07-19 11:04:41,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 815 transitions. [2022-07-19 11:04:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 11:04:41,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:41,182 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:41,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 11:04:41,182 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:41,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:41,183 INFO L85 PathProgramCache]: Analyzing trace with hash 138370680, now seen corresponding path program 1 times [2022-07-19 11:04:41,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:41,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329237397] [2022-07-19 11:04:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-19 11:04:41,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:41,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329237397] [2022-07-19 11:04:41,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329237397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:41,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:41,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:41,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028894000] [2022-07-19 11:04:41,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:41,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:41,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:41,304 INFO L87 Difference]: Start difference. First operand 566 states and 815 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:41,351 INFO L93 Difference]: Finished difference Result 1650 states and 2389 transitions. [2022-07-19 11:04:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:41,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-07-19 11:04:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:41,355 INFO L225 Difference]: With dead ends: 1650 [2022-07-19 11:04:41,356 INFO L226 Difference]: Without dead ends: 1105 [2022-07-19 11:04:41,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:41,359 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 139 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:41,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 557 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-19 11:04:41,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1105. [2022-07-19 11:04:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.4420289855072463) internal successors, (1592), 1104 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1592 transitions. [2022-07-19 11:04:41,386 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1592 transitions. Word has length 166 [2022-07-19 11:04:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:41,386 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1592 transitions. [2022-07-19 11:04:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1592 transitions. [2022-07-19 11:04:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 11:04:41,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:41,389 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:41,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 11:04:41,389 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash 234885032, now seen corresponding path program 1 times [2022-07-19 11:04:41,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:41,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469339874] [2022-07-19 11:04:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:41,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:41,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:41,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469339874] [2022-07-19 11:04:41,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469339874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:41,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:41,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:41,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528582934] [2022-07-19 11:04:41,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:41,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:41,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:41,508 INFO L87 Difference]: Start difference. First operand 1105 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:41,558 INFO L93 Difference]: Finished difference Result 2693 states and 3889 transitions. [2022-07-19 11:04:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:41,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 167 [2022-07-19 11:04:41,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:41,563 INFO L225 Difference]: With dead ends: 2693 [2022-07-19 11:04:41,564 INFO L226 Difference]: Without dead ends: 1609 [2022-07-19 11:04:41,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:41,566 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:41,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 487 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2022-07-19 11:04:41,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1607. [2022-07-19 11:04:41,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 1.4414694894146949) internal successors, (2315), 1606 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2315 transitions. [2022-07-19 11:04:41,601 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2315 transitions. Word has length 167 [2022-07-19 11:04:41,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:41,601 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2315 transitions. [2022-07-19 11:04:41,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2315 transitions. [2022-07-19 11:04:41,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 11:04:41,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:41,613 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:41,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 11:04:41,613 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1802673043, now seen corresponding path program 1 times [2022-07-19 11:04:41,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:41,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344241783] [2022-07-19 11:04:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:41,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 11:04:41,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:41,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344241783] [2022-07-19 11:04:41,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344241783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:41,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:41,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961344051] [2022-07-19 11:04:41,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:41,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:41,711 INFO L87 Difference]: Start difference. First operand 1607 states and 2315 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:41,775 INFO L93 Difference]: Finished difference Result 3688 states and 5325 transitions. [2022-07-19 11:04:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 168 [2022-07-19 11:04:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:41,782 INFO L225 Difference]: With dead ends: 3688 [2022-07-19 11:04:41,783 INFO L226 Difference]: Without dead ends: 2102 [2022-07-19 11:04:41,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:41,786 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:41,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 503 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:41,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-07-19 11:04:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2098. [2022-07-19 11:04:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 1.4430138292799237) internal successors, (3026), 2097 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3026 transitions. [2022-07-19 11:04:41,849 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3026 transitions. Word has length 168 [2022-07-19 11:04:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:41,850 INFO L495 AbstractCegarLoop]: Abstraction has 2098 states and 3026 transitions. [2022-07-19 11:04:41,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3026 transitions. [2022-07-19 11:04:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 11:04:41,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:41,854 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:41,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 11:04:41,854 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:41,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1368167445, now seen corresponding path program 1 times [2022-07-19 11:04:41,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154679091] [2022-07-19 11:04:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-19 11:04:41,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:41,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154679091] [2022-07-19 11:04:41,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154679091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:41,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:41,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:41,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859007624] [2022-07-19 11:04:41,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:41,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:41,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:41,953 INFO L87 Difference]: Start difference. First operand 2098 states and 3026 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:42,036 INFO L93 Difference]: Finished difference Result 4202 states and 6064 transitions. [2022-07-19 11:04:42,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:42,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-07-19 11:04:42,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:42,044 INFO L225 Difference]: With dead ends: 4202 [2022-07-19 11:04:42,044 INFO L226 Difference]: Without dead ends: 2125 [2022-07-19 11:04:42,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:42,051 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:42,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 404 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-07-19 11:04:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2125. [2022-07-19 11:04:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2124 states have (on average 1.4411487758945387) internal successors, (3061), 2124 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3061 transitions. [2022-07-19 11:04:42,102 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3061 transitions. Word has length 168 [2022-07-19 11:04:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:42,103 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3061 transitions. [2022-07-19 11:04:42,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3061 transitions. [2022-07-19 11:04:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 11:04:42,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:42,107 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-19 11:04:42,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 11:04:42,107 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:42,108 INFO L85 PathProgramCache]: Analyzing trace with hash -995674217, now seen corresponding path program 1 times [2022-07-19 11:04:42,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:42,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305236751] [2022-07-19 11:04:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-19 11:04:42,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:42,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305236751] [2022-07-19 11:04:42,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305236751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:42,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:42,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402885855] [2022-07-19 11:04:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:42,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:42,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:42,229 INFO L87 Difference]: Start difference. First operand 2125 states and 3061 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:42,279 INFO L93 Difference]: Finished difference Result 4231 states and 6100 transitions. [2022-07-19 11:04:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:42,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 168 [2022-07-19 11:04:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:42,296 INFO L225 Difference]: With dead ends: 4231 [2022-07-19 11:04:42,301 INFO L226 Difference]: Without dead ends: 2127 [2022-07-19 11:04:42,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:42,306 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:42,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 383 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-07-19 11:04:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2127. [2022-07-19 11:04:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 1.4407337723424272) internal successors, (3063), 2126 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3063 transitions. [2022-07-19 11:04:42,386 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3063 transitions. Word has length 168 [2022-07-19 11:04:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:42,388 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3063 transitions. [2022-07-19 11:04:42,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3063 transitions. [2022-07-19 11:04:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 11:04:42,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:42,391 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:04:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 11:04:42,392 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1102630147, now seen corresponding path program 1 times [2022-07-19 11:04:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:42,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154363273] [2022-07-19 11:04:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-19 11:04:42,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:42,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154363273] [2022-07-19 11:04:42,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154363273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:42,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:42,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460721872] [2022-07-19 11:04:42,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:42,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:42,514 INFO L87 Difference]: Start difference. First operand 2127 states and 3063 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:43,213 INFO L93 Difference]: Finished difference Result 4616 states and 6625 transitions. [2022-07-19 11:04:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:43,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 179 [2022-07-19 11:04:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:43,218 INFO L225 Difference]: With dead ends: 4616 [2022-07-19 11:04:43,218 INFO L226 Difference]: Without dead ends: 2512 [2022-07-19 11:04:43,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:43,220 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 104 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:43,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 346 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2022-07-19 11:04:43,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 2247. [2022-07-19 11:04:43,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4305431878895816) internal successors, (3213), 2246 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3213 transitions. [2022-07-19 11:04:43,274 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3213 transitions. Word has length 179 [2022-07-19 11:04:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:43,274 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3213 transitions. [2022-07-19 11:04:43,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3213 transitions. [2022-07-19 11:04:43,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-19 11:04:43,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:43,277 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-19 11:04:43,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 11:04:43,278 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:43,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:43,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1645851351, now seen corresponding path program 1 times [2022-07-19 11:04:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:43,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132316574] [2022-07-19 11:04:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:43,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-19 11:04:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:43,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132316574] [2022-07-19 11:04:43,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132316574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:43,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:43,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061405964] [2022-07-19 11:04:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:43,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:43,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:43,402 INFO L87 Difference]: Start difference. First operand 2247 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:44,093 INFO L93 Difference]: Finished difference Result 4556 states and 6513 transitions. [2022-07-19 11:04:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:44,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 180 [2022-07-19 11:04:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:44,098 INFO L225 Difference]: With dead ends: 4556 [2022-07-19 11:04:44,098 INFO L226 Difference]: Without dead ends: 2332 [2022-07-19 11:04:44,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:44,101 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 59 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:44,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 540 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:44,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2022-07-19 11:04:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2247. [2022-07-19 11:04:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.429207479964381) internal successors, (3210), 2246 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3210 transitions. [2022-07-19 11:04:44,169 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3210 transitions. Word has length 180 [2022-07-19 11:04:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:44,170 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3210 transitions. [2022-07-19 11:04:44,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3210 transitions. [2022-07-19 11:04:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-19 11:04:44,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:44,173 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-19 11:04:44,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 11:04:44,174 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1897594940, now seen corresponding path program 1 times [2022-07-19 11:04:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:44,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335124939] [2022-07-19 11:04:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:44,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-19 11:04:44,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:44,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335124939] [2022-07-19 11:04:44,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335124939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:44,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:44,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:44,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23395676] [2022-07-19 11:04:44,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:44,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:44,283 INFO L87 Difference]: Start difference. First operand 2247 states and 3210 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:44,944 INFO L93 Difference]: Finished difference Result 4688 states and 6683 transitions. [2022-07-19 11:04:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:44,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 183 [2022-07-19 11:04:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:44,949 INFO L225 Difference]: With dead ends: 4688 [2022-07-19 11:04:44,949 INFO L226 Difference]: Without dead ends: 2464 [2022-07-19 11:04:44,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:44,951 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 105 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:44,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 342 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-07-19 11:04:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2247. [2022-07-19 11:04:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4158504007123776) internal successors, (3180), 2246 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3180 transitions. [2022-07-19 11:04:44,994 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3180 transitions. Word has length 183 [2022-07-19 11:04:44,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:44,995 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3180 transitions. [2022-07-19 11:04:44,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3180 transitions. [2022-07-19 11:04:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 11:04:44,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:44,998 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:04:44,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 11:04:44,999 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:44,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1707338316, now seen corresponding path program 1 times [2022-07-19 11:04:44,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:45,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023253851] [2022-07-19 11:04:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:45,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 11:04:45,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:45,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023253851] [2022-07-19 11:04:45,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023253851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:45,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:45,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:45,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209728744] [2022-07-19 11:04:45,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:45,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:45,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:45,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:45,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:45,156 INFO L87 Difference]: Start difference. First operand 2247 states and 3180 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:46,384 INFO L93 Difference]: Finished difference Result 4526 states and 6402 transitions. [2022-07-19 11:04:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:46,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 189 [2022-07-19 11:04:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:46,387 INFO L225 Difference]: With dead ends: 4526 [2022-07-19 11:04:46,387 INFO L226 Difference]: Without dead ends: 2302 [2022-07-19 11:04:46,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:46,388 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 43 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:46,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 560 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:04:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-07-19 11:04:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2247. [2022-07-19 11:04:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4145146927871772) internal successors, (3177), 2246 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3177 transitions. [2022-07-19 11:04:46,434 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3177 transitions. Word has length 189 [2022-07-19 11:04:46,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:46,434 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3177 transitions. [2022-07-19 11:04:46,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3177 transitions. [2022-07-19 11:04:46,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 11:04:46,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:46,438 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:46,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 11:04:46,438 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1760759993, now seen corresponding path program 1 times [2022-07-19 11:04:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:46,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496864760] [2022-07-19 11:04:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:46,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-19 11:04:46,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:46,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496864760] [2022-07-19 11:04:46,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496864760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:46,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:46,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487291511] [2022-07-19 11:04:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:46,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:46,587 INFO L87 Difference]: Start difference. First operand 2247 states and 3177 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:48,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:48,626 INFO L93 Difference]: Finished difference Result 4688 states and 6617 transitions. [2022-07-19 11:04:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:48,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 189 [2022-07-19 11:04:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:48,630 INFO L225 Difference]: With dead ends: 4688 [2022-07-19 11:04:48,630 INFO L226 Difference]: Without dead ends: 2464 [2022-07-19 11:04:48,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:48,633 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 103 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:48,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 346 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 11:04:48,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-07-19 11:04:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2247. [2022-07-19 11:04:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.404274265360641) internal successors, (3154), 2246 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3154 transitions. [2022-07-19 11:04:48,674 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3154 transitions. Word has length 189 [2022-07-19 11:04:48,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:48,675 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3154 transitions. [2022-07-19 11:04:48,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3154 transitions. [2022-07-19 11:04:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-19 11:04:48,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:48,679 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:48,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 11:04:48,679 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:48,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash 867563374, now seen corresponding path program 1 times [2022-07-19 11:04:48,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:48,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399479467] [2022-07-19 11:04:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:48,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-19 11:04:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399479467] [2022-07-19 11:04:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399479467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:49,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:49,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440336976] [2022-07-19 11:04:49,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:49,095 INFO L87 Difference]: Start difference. First operand 2247 states and 3154 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:50,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:51,446 INFO L93 Difference]: Finished difference Result 4491 states and 6304 transitions. [2022-07-19 11:04:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:51,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 191 [2022-07-19 11:04:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:51,451 INFO L225 Difference]: With dead ends: 4491 [2022-07-19 11:04:51,451 INFO L226 Difference]: Without dead ends: 2247 [2022-07-19 11:04:51,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:51,454 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 7 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:51,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 647 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 11:04:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2022-07-19 11:04:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2247. [2022-07-19 11:04:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4038290293855744) internal successors, (3153), 2246 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3153 transitions. [2022-07-19 11:04:51,503 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3153 transitions. Word has length 191 [2022-07-19 11:04:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:51,503 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3153 transitions. [2022-07-19 11:04:51,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3153 transitions. [2022-07-19 11:04:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-19 11:04:51,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:51,506 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:51,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-19 11:04:51,507 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash 990845040, now seen corresponding path program 1 times [2022-07-19 11:04:51,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:51,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834957650] [2022-07-19 11:04:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:51,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 26 proven. 183 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-19 11:04:53,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:53,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834957650] [2022-07-19 11:04:53,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834957650] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:53,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103517264] [2022-07-19 11:04:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:53,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:04:53,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:53,295 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) [2022-07-19 11:04:53,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 11:04:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:54,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 163 conjunts are in the unsatisfiable core [2022-07-19 11:04:54,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:04:55,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:55,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:55,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:55,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:55,664 INFO L356 Elim1Store]: treesize reduction 1040, result has 8.0 percent of original size [2022-07-19 11:04:55,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 31556846 treesize of output 6795388 [2022-07-19 11:04:57,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:57,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:57,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:58,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:58,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:22,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:22,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:22,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:22,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:30,795 INFO L244 Elim1Store]: Index analysis took 8615 ms