./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_io_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/psyco/psyco_io_1.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 0e42a14d02446d341c51d21bb42c9bd175f1ebef ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 05:55:17,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 05:55:17,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 05:55:17,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 05:55:17,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 05:55:17,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 05:55:17,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 05:55:17,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 05:55:17,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 05:55:17,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 05:55:17,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 05:55:17,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 05:55:17,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 05:55:17,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 05:55:17,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 05:55:17,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 05:55:17,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 05:55:17,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 05:55:17,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 05:55:17,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 05:55:17,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 05:55:17,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 05:55:17,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 05:55:17,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 05:55:17,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 05:55:17,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 05:55:17,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 05:55:17,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 05:55:17,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 05:55:17,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 05:55:17,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 05:55:17,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 05:55:17,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 05:55:17,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 05:55:17,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 05:55:17,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 05:55:17,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 05:55:17,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 05:55:17,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 05:55:17,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 05:55:17,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 05:55:17,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 05:55:17,575 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 05:55:17,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 05:55:17,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 05:55:17,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 05:55:17,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 05:55:17,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 05:55:17,577 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 05:55:17,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 05:55:17,578 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 05:55:17,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 05:55:17,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 05:55:17,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 05:55:17,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 05:55:17,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 05:55:17,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 05:55:17,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 05:55:17,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 05:55:17,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 05:55:17,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 05:55:17,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 05:55:17,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 05:55:17,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 05:55:17,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e42a14d02446d341c51d21bb42c9bd175f1ebef [2021-08-29 05:55:17,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 05:55:17,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 05:55:17,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 05:55:17,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 05:55:17,866 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 05:55:17,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_io_1.c [2021-08-29 05:55:17,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221511e4a/de2cf2e5f48d414b958417f702d1f514/FLAG3adf4e18b [2021-08-29 05:55:18,364 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 05:55:18,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c [2021-08-29 05:55:18,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221511e4a/de2cf2e5f48d414b958417f702d1f514/FLAG3adf4e18b [2021-08-29 05:55:18,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221511e4a/de2cf2e5f48d414b958417f702d1f514 [2021-08-29 05:55:18,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 05:55:18,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 05:55:18,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 05:55:18,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 05:55:18,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 05:55:18,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18587c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18, skipping insertion in model container [2021-08-29 05:55:18,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 05:55:18,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 05:55:18,643 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2021-08-29 05:55:18,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 05:55:18,651 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 05:55:18,695 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2021-08-29 05:55:18,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 05:55:18,703 INFO L208 MainTranslator]: Completed translation [2021-08-29 05:55:18,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18 WrapperNode [2021-08-29 05:55:18,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 05:55:18,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 05:55:18,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 05:55:18,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 05:55:18,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 05:55:18,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 05:55:18,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 05:55:18,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 05:55:18,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 05:55:18,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 05:55:18,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 05:55:18,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 05:55:18,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (1/1) ... [2021-08-29 05:55:18,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 05:55:18,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 05:55:18,838 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) [2021-08-29 05:55:18,856 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 [2021-08-29 05:55:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 05:55:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 05:55:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 05:55:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 05:55:19,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 05:55:19,022 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-29 05:55:19,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:55:19 BoogieIcfgContainer [2021-08-29 05:55:19,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 05:55:19,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 05:55:19,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 05:55:19,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 05:55:19,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 05:55:18" (1/3) ... [2021-08-29 05:55:19,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd2e502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:55:19, skipping insertion in model container [2021-08-29 05:55:19,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:55:18" (2/3) ... [2021-08-29 05:55:19,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd2e502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:55:19, skipping insertion in model container [2021-08-29 05:55:19,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:55:19" (3/3) ... [2021-08-29 05:55:19,028 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2021-08-29 05:55:19,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 05:55:19,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 05:55:19,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 05:55:19,077 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 05:55:19,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 05:55:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 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) [2021-08-29 05:55:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 05:55:19,089 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:55:19,089 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:55:19,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:55:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:55:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash 352571312, now seen corresponding path program 1 times [2021-08-29 05:55:19,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:55:19,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831838107] [2021-08-29 05:55:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:55:19,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:55:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:55:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:55:19,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:55:19,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831838107] [2021-08-29 05:55:19,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831838107] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:55:19,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:55:19,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 05:55:19,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683826233] [2021-08-29 05:55:19,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 05:55:19,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:55:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 05:55:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 05:55:19,215 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:55:19,351 INFO L93 Difference]: Finished difference Result 130 states and 244 transitions. [2021-08-29 05:55:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 05:55:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-08-29 05:55:19,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:55:19,378 INFO L225 Difference]: With dead ends: 130 [2021-08-29 05:55:19,378 INFO L226 Difference]: Without dead ends: 57 [2021-08-29 05:55:19,380 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 05:55:19,382 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.75ms IncrementalHoareTripleChecker+Time [2021-08-29 05:55:19,383 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 114.75ms Time] [2021-08-29 05:55:19,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-29 05:55:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-08-29 05:55:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 56 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2021-08-29 05:55:19,428 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 9 [2021-08-29 05:55:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:55:19,428 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2021-08-29 05:55:19,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2021-08-29 05:55:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 05:55:19,429 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:55:19,429 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:55:19,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 05:55:19,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:55:19,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:55:19,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697760, now seen corresponding path program 1 times [2021-08-29 05:55:19,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:55:19,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853553233] [2021-08-29 05:55:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:55:19,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:55:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:55:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:55:19,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:55:19,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853553233] [2021-08-29 05:55:19,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853553233] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:55:19,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:55:19,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:55:19,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068534169] [2021-08-29 05:55:19,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:55:19,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:55:19,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:55:19,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:55:19,512 INFO L87 Difference]: Start difference. First operand 57 states and 87 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:19,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:55:19,628 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2021-08-29 05:55:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:55:19,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-08-29 05:55:19,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:55:19,629 INFO L225 Difference]: With dead ends: 115 [2021-08-29 05:55:19,630 INFO L226 Difference]: Without dead ends: 60 [2021-08-29 05:55:19,630 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:55:19,631 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.62ms IncrementalHoareTripleChecker+Time [2021-08-29 05:55:19,631 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 170 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 107.62ms Time] [2021-08-29 05:55:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-29 05:55:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-08-29 05:55:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 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) [2021-08-29 05:55:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2021-08-29 05:55:19,657 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 10 [2021-08-29 05:55:19,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:55:19,657 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2021-08-29 05:55:19,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:19,657 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2021-08-29 05:55:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 05:55:19,658 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:55:19,658 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:55:19,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 05:55:19,658 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:55:19,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:55:19,659 INFO L82 PathProgramCache]: Analyzing trace with hash 658032531, now seen corresponding path program 1 times [2021-08-29 05:55:19,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:55:19,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690234314] [2021-08-29 05:55:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:55:19,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:55:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:55:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:55:19,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:55:19,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690234314] [2021-08-29 05:55:19,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690234314] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:55:19,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:55:19,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:55:19,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034850353] [2021-08-29 05:55:19,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:55:19,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:55:19,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:55:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:55:19,724 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:19,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:55:19,865 INFO L93 Difference]: Finished difference Result 123 states and 185 transitions. [2021-08-29 05:55:19,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:55:19,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 05:55:19,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:55:19,866 INFO L225 Difference]: With dead ends: 123 [2021-08-29 05:55:19,866 INFO L226 Difference]: Without dead ends: 66 [2021-08-29 05:55:19,867 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:55:19,868 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.79ms IncrementalHoareTripleChecker+Time [2021-08-29 05:55:19,868 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 150 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 132.79ms Time] [2021-08-29 05:55:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-29 05:55:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-08-29 05:55:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 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) [2021-08-29 05:55:19,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2021-08-29 05:55:19,873 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 15 [2021-08-29 05:55:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:55:19,873 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2021-08-29 05:55:19,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2021-08-29 05:55:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 05:55:19,874 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:55:19,874 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:55:19,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 05:55:19,874 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:55:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:55:19,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2017993163, now seen corresponding path program 1 times [2021-08-29 05:55:19,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:55:19,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376863905] [2021-08-29 05:55:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:55:19,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:55:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:55:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:55:19,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:55:19,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376863905] [2021-08-29 05:55:19,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376863905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:55:19,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:55:19,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:55:19,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67499311] [2021-08-29 05:55:19,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:55:19,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:55:19,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:55:19,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:55:19,935 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:55:20,082 INFO L93 Difference]: Finished difference Result 182 states and 272 transitions. [2021-08-29 05:55:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:55:20,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-08-29 05:55:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:55:20,087 INFO L225 Difference]: With dead ends: 182 [2021-08-29 05:55:20,087 INFO L226 Difference]: Without dead ends: 117 [2021-08-29 05:55:20,087 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:55:20,094 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.94ms IncrementalHoareTripleChecker+Time [2021-08-29 05:55:20,095 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 220 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [15 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 132.94ms Time] [2021-08-29 05:55:20,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-29 05:55:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2021-08-29 05:55:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.4953271028037383) internal successors, (160), 107 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2021-08-29 05:55:20,103 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 20 [2021-08-29 05:55:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:55:20,103 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2021-08-29 05:55:20,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2021-08-29 05:55:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-29 05:55:20,104 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:55:20,104 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:55:20,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 05:55:20,104 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:55:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:55:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1713693363, now seen corresponding path program 1 times [2021-08-29 05:55:20,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:55:20,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666096424] [2021-08-29 05:55:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:55:20,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:55:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:55:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 05:55:20,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:55:20,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666096424] [2021-08-29 05:55:20,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666096424] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:55:20,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:55:20,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:55:20,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852846014] [2021-08-29 05:55:20,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:55:20,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:55:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:55:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:55:20,172 INFO L87 Difference]: Start difference. First operand 108 states and 160 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:55:20,231 INFO L93 Difference]: Finished difference Result 178 states and 264 transitions. [2021-08-29 05:55:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:55:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 27 [2021-08-29 05:55:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:55:20,232 INFO L225 Difference]: With dead ends: 178 [2021-08-29 05:55:20,232 INFO L226 Difference]: Without dead ends: 73 [2021-08-29 05:55:20,232 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:55:20,233 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.29ms IncrementalHoareTripleChecker+Time [2021-08-29 05:55:20,233 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 54.29ms Time] [2021-08-29 05:55:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-29 05:55:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-29 05:55:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2021-08-29 05:55:20,237 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 27 [2021-08-29 05:55:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:55:20,238 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-08-29 05:55:20,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2021-08-29 05:55:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 05:55:20,238 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:55:20,238 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-08-29 05:55:20,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 05:55:20,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:55:20,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:55:20,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1521721792, now seen corresponding path program 1 times [2021-08-29 05:55:20,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:55:20,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149697297] [2021-08-29 05:55:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:55:20,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:55:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:55:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 05:55:20,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:55:20,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149697297] [2021-08-29 05:55:20,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149697297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:55:20,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:55:20,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 05:55:20,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246068581] [2021-08-29 05:55:20,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 05:55:20,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:55:20,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 05:55:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 05:55:20,287 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:55:20,375 INFO L93 Difference]: Finished difference Result 76 states and 104 transitions. [2021-08-29 05:55:20,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 05:55:20,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 33 [2021-08-29 05:55:20,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:55:20,375 INFO L225 Difference]: With dead ends: 76 [2021-08-29 05:55:20,375 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 05:55:20,376 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 05:55:20,376 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.69ms IncrementalHoareTripleChecker+Time [2021-08-29 05:55:20,376 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [9 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 75.69ms Time] [2021-08-29 05:55:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 05:55:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 05:55:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 05:55:20,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-08-29 05:55:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:55:20,377 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 05:55:20,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:55:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 05:55:20,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 05:55:20,379 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 05:55:20,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 05:55:20,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 05:55:20,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 05:55:20,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 05:55:20,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 05:55:20,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 05:55:20,410 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 51) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L88(lines 88 103) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L55(lines 55 106) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 219) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 87) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L320(lines 320 335) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 203) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 71) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L854 garLoopResultBuilder]: At program point L337(lines 25 341) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~this_sink~0 0)) (= ULTIMATE.start_main_~q~0 0) (and (<= 3 ULTIMATE.start_main_~q~0) (or (<= 1 ULTIMATE.start_main_~this_sink~0) (<= (+ ULTIMATE.start_main_~this_sink~0 1) 0)))) [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L304(lines 304 319) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L172(lines 172 187) no Hoare annotation was computed. [2021-08-29 05:55:20,411 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 303) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L156(lines 156 171) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 101) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L272(lines 272 287) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L206(lines 206 217) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 155) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 222) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 333) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L256(lines 256 271) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L223(lines 223 338) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L190(lines 190 201) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L58(lines 58 69) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L854 garLoopResultBuilder]: At program point L25-2(lines 25 341) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_sink~0 0)) (and (<= 3 ULTIMATE.start_main_~q~0) (or (<= 1 ULTIMATE.start_main_~this_sink~0) (<= (+ ULTIMATE.start_main_~this_sink~0 1) 0)))) [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2021-08-29 05:55:20,412 INFO L858 garLoopResultBuilder]: For program point L306(lines 306 317) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L240(lines 240 255) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L174(lines 174 185) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L108(lines 108 123) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 301) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 239) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 169) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 285) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L142(lines 142 153) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 269) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L126(lines 126 137) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 253) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 121) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L226(lines 226 237) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 96) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 05:55:20,413 INFO L858 garLoopResultBuilder]: For program point L210(lines 210 212) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 328) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L194(lines 194 196) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L62(lines 62 64) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L310(lines 310 312) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L178(lines 178 180) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L854 garLoopResultBuilder]: At program point L327(lines 15 346) the Hoare annotation is: false [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L294(lines 294 296) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 164) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 280) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 148) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 264) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L130(lines 130 132) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L246(lines 246 248) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L114(lines 114 116) no Hoare annotation was computed. [2021-08-29 05:55:20,414 INFO L861 garLoopResultBuilder]: At program point L15(lines 15 346) the Hoare annotation is: true [2021-08-29 05:55:20,414 INFO L858 garLoopResultBuilder]: For program point L230(lines 230 232) no Hoare annotation was computed. [2021-08-29 05:55:20,415 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 05:55:20,415 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-08-29 05:55:20,415 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 54) no Hoare annotation was computed. [2021-08-29 05:55:20,417 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 05:55:20,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 05:55:20 BoogieIcfgContainer [2021-08-29 05:55:20,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 05:55:20,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 05:55:20,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 05:55:20,432 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 05:55:20,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:55:19" (3/4) ... [2021-08-29 05:55:20,434 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 05:55:20,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 05:55:20,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 05:55:20,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 05:55:20,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 05:55:20,456 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 05:55:20,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 05:55:20,457 INFO L158 Benchmark]: Toolchain (without parser) took 2045.64ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 42.0MB in the beginning and 64.0MB in the end (delta: -22.0MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-08-29 05:55:20,457 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 44.0MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 05:55:20,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.72ms. Allocated memory is still 62.9MB. Free memory was 41.9MB in the beginning and 44.1MB in the end (delta: -2.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 05:55:20,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.85ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 42.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 05:55:20,458 INFO L158 Benchmark]: Boogie Preprocessor took 21.84ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 05:55:20,458 INFO L158 Benchmark]: RCFGBuilder took 250.39ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 28.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 05:55:20,458 INFO L158 Benchmark]: TraceAbstraction took 1407.35ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 27.9MB in the beginning and 66.2MB in the end (delta: -38.2MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2021-08-29 05:55:20,458 INFO L158 Benchmark]: Witness Printer took 24.28ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 64.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 05:55:20,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 44.0MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.72ms. Allocated memory is still 62.9MB. Free memory was 41.9MB in the beginning and 44.1MB in the end (delta: -2.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.85ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 42.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.84ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.39ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 28.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1407.35ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 27.9MB in the beginning and 66.2MB in the end (delta: -38.2MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Witness Printer took 24.28ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 64.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1345.40ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 7.98ms, AutomataDifference: 763.13ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 30.53ms, InitialAbstractionConstructionTime: 6.57ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 140 SdHoareTripleChecker+Valid, 618.08ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 445.83ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 283 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 881 IncrementalHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 0 mSDtfsCounter, 881 mSolverCounterSat, 5.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.25ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 66.41ms AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 47 HoareAnnotationTreeSize, 4 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 7.47ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 18.28ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 15.95ms SsaConstructionTime, 90.19ms SatisfiabilityAnalysisTime, 235.15ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && (1 <= this_sink || this_sink + 1 <= 0)) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((q == 2 && this_sink == 0) || q == 0) || (3 <= q && (1 <= this_sink || this_sink + 1 <= 0)) RESULT: Ultimate proved your program to be correct! [2021-08-29 05:55:20,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...