./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e93874e14ae2500244a096d4db4f531f43d584aa ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:08:51,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:08:51,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:08:51,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:08:51,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:08:51,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:08:51,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:08:51,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:08:51,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:08:51,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:08:51,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:08:51,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:08:51,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:08:51,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:08:51,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:08:51,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:08:51,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:08:51,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:08:51,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:08:51,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:08:51,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:08:51,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:08:51,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:08:51,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:08:51,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:08:51,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:08:51,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:08:51,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:08:51,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:08:51,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:08:51,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:08:51,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:08:51,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:08:51,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:08:51,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:08:51,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:08:51,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:08:51,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:08:51,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:08:51,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:08:51,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:08:51,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:08:51,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:08:51,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:08:51,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:08:51,771 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:08:51,772 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:08:51,772 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:08:51,772 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:08:51,772 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:08:51,773 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:08:51,773 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:08:51,773 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:08:51,773 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:08:51,774 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:08:51,774 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:08:51,774 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:08:51,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:08:51,775 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:08:51,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:08:51,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:08:51,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:08:51,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:08:51,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:08:51,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:08:51,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:08:51,778 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:08:51,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:08:51,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:08:51,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:08:51,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:08:51,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:08:51,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:08:51,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:08:51,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:08:51,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:08:51,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:08:51,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:08:51,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:08:51,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:08:51,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:08:51,782 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e93874e14ae2500244a096d4db4f531f43d584aa [2021-10-13 08:08:52,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:08:52,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:08:52,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:08:52,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:08:52,102 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:08:52,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i [2021-10-13 08:08:52,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/data/301e3a057/faf6bad7b8f94367865e7d01fcde3a85/FLAGd78e3ffd6 [2021-10-13 08:08:52,805 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:08:52,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i [2021-10-13 08:08:52,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/data/301e3a057/faf6bad7b8f94367865e7d01fcde3a85/FLAGd78e3ffd6 [2021-10-13 08:08:53,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/data/301e3a057/faf6bad7b8f94367865e7d01fcde3a85 [2021-10-13 08:08:53,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:08:53,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:08:53,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:08:53,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:08:53,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:08:53,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc1b9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53, skipping insertion in model container [2021-10-13 08:08:53,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:08:53,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:08:53,356 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i[950,963] [2021-10-13 08:08:53,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:08:53,608 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:08:53,621 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i[950,963] [2021-10-13 08:08:53,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:08:53,694 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:08:53,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53 WrapperNode [2021-10-13 08:08:53,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:08:53,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:08:53,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:08:53,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:08:53,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:08:53,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:08:53,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:08:53,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:08:53,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:08:53,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:08:53,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:08:53,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:08:53,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (1/1) ... [2021-10-13 08:08:53,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:08:53,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:08:53,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:08:53,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:08:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 08:08:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 08:08:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:08:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:08:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 08:08:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 08:08:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 08:08:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 08:08:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 08:08:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 08:08:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:08:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 08:08:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:08:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:08:53,878 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 08:08:54,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:08:54,262 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 08:08:54,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:08:54 BoogieIcfgContainer [2021-10-13 08:08:54,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:08:54,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:08:54,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:08:54,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:08:54,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:08:53" (1/3) ... [2021-10-13 08:08:54,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf96291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:08:54, skipping insertion in model container [2021-10-13 08:08:54,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:53" (2/3) ... [2021-10-13 08:08:54,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf96291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:08:54, skipping insertion in model container [2021-10-13 08:08:54,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:08:54" (3/3) ... [2021-10-13 08:08:54,288 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_pso.oepc.i [2021-10-13 08:08:54,296 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 08:08:54,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:08:54,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:08:54,296 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 08:08:54,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,366 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,366 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,366 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,366 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,367 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,367 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,367 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,376 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,376 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,379 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,380 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,380 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,380 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,382 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,411 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,411 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,413 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 08:08:54,416 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 08:08:54,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:08:54,485 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 [2021-10-13 08:08:54,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 08:08:54,513 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 08:08:54,529 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 85 transitions, 185 flow [2021-10-13 08:08:54,532 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 85 transitions, 185 flow [2021-10-13 08:08:54,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-10-13 08:08:54,601 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-10-13 08:08:54,602 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 08:08:54,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 08:08:54,608 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 08:08:57,438 INFO L131 LiptonReduction]: Checked pairs total: 2576 [2021-10-13 08:08:57,438 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-13 08:08:57,445 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-13 08:08:57,478 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:08:57,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:57,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:57,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 08:08:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:57,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1638919861, now seen corresponding path program 1 times [2021-10-13 08:08:57,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:08:57,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241196473] [2021-10-13 08:08:57,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:57,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:08:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:57,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:08:57,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241196473] [2021-10-13 08:08:57,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241196473] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:57,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:57,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:08:57,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178150596] [2021-10-13 08:08:57,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:08:57,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:08:57,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:08:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:08:57,814 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:57,864 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2021-10-13 08:08:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:08:57,866 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-13 08:08:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:57,891 INFO L225 Difference]: With dead ends: 298 [2021-10-13 08:08:57,891 INFO L226 Difference]: Without dead ends: 298 [2021-10-13 08:08:57,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:08:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-13 08:08:57,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-13 08:08:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-13 08:08:57,994 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-13 08:08:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:57,995 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-13 08:08:57,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:57,997 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-13 08:08:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:08:58,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:58,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:58,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:08:58,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 08:08:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:58,002 INFO L82 PathProgramCache]: Analyzing trace with hash 733081102, now seen corresponding path program 1 times [2021-10-13 08:08:58,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:08:58,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396392084] [2021-10-13 08:08:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:58,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:08:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:58,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:08:58,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396392084] [2021-10-13 08:08:58,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396392084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:58,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:58,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:08:58,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019119359] [2021-10-13 08:08:58,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:08:58,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:08:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:08:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:08:58,241 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-10-13 08:08:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:58,268 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2021-10-13 08:08:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:08:58,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2021-10-13 08:08:58,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:58,272 INFO L225 Difference]: With dead ends: 330 [2021-10-13 08:08:58,272 INFO L226 Difference]: Without dead ends: 266 [2021-10-13 08:08:58,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:08:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-13 08:08:58,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-13 08:08:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.8377358490566036) internal successors, (752), 265 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2021-10-13 08:08:58,290 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2021-10-13 08:08:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:58,290 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2021-10-13 08:08:58,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-10-13 08:08:58,291 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2021-10-13 08:08:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:08:58,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:58,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:58,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:08:58,293 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 08:08:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:58,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1249982691, now seen corresponding path program 1 times [2021-10-13 08:08:58,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:08:58,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294817799] [2021-10-13 08:08:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:58,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:08:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:58,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:08:58,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294817799] [2021-10-13 08:08:58,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294817799] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:58,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:58,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:08:58,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843085912] [2021-10-13 08:08:58,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:08:58,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:08:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:08:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:08:58,398 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-13 08:08:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:58,430 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2021-10-13 08:08:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:08:58,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2021-10-13 08:08:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:58,433 INFO L225 Difference]: With dead ends: 290 [2021-10-13 08:08:58,435 INFO L226 Difference]: Without dead ends: 242 [2021-10-13 08:08:58,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:08:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-13 08:08:58,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-13 08:08:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.780082987551867) internal successors, (670), 241 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2021-10-13 08:08:58,453 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2021-10-13 08:08:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:58,454 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2021-10-13 08:08:58,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-13 08:08:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2021-10-13 08:08:58,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:08:58,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:58,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:58,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:08:58,462 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 08:08:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash 93288200, now seen corresponding path program 1 times [2021-10-13 08:08:58,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:08:58,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941557606] [2021-10-13 08:08:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:58,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:08:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:58,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:08:58,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941557606] [2021-10-13 08:08:58,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941557606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:58,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:58,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:08:58,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135357971] [2021-10-13 08:08:58,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:08:58,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:08:58,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:08:58,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:08:58,574 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:58,612 INFO L93 Difference]: Finished difference Result 290 states and 777 transitions. [2021-10-13 08:08:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:08:58,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-10-13 08:08:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:58,614 INFO L225 Difference]: With dead ends: 290 [2021-10-13 08:08:58,614 INFO L226 Difference]: Without dead ends: 128 [2021-10-13 08:08:58,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:08:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-13 08:08:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-13 08:08:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.4881889763779528) internal successors, (316), 127 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2021-10-13 08:08:58,627 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 11 [2021-10-13 08:08:58,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:58,628 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2021-10-13 08:08:58,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2021-10-13 08:08:58,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 08:08:58,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:58,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:58,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 08:08:58,632 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 08:08:58,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:58,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1576287559, now seen corresponding path program 1 times [2021-10-13 08:08:58,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:08:58,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873000962] [2021-10-13 08:08:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:58,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:08:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:58,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:08:58,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873000962] [2021-10-13 08:08:58,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873000962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:58,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:58,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:08:58,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146949676] [2021-10-13 08:08:58,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:08:58,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:08:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:08:58,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:08:58,769 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:58,816 INFO L93 Difference]: Finished difference Result 158 states and 381 transitions. [2021-10-13 08:08:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:08:58,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-10-13 08:08:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:58,817 INFO L225 Difference]: With dead ends: 158 [2021-10-13 08:08:58,818 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 08:08:58,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:08:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 08:08:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-13 08:08:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 73 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2021-10-13 08:08:58,822 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 13 [2021-10-13 08:08:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:58,823 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2021-10-13 08:08:58,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2021-10-13 08:08:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 08:08:58,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:58,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:58,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 08:08:58,824 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 08:08:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash 707566501, now seen corresponding path program 1 times [2021-10-13 08:08:58,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:08:58,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791462523] [2021-10-13 08:08:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:58,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:08:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:58,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:08:58,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791462523] [2021-10-13 08:08:58,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791462523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:58,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:58,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:08:58,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768841576] [2021-10-13 08:08:58,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:08:58,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:08:58,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:08:58,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:08:58,915 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:58,944 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2021-10-13 08:08:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:08:58,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-13 08:08:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:58,944 INFO L225 Difference]: With dead ends: 62 [2021-10-13 08:08:58,945 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:08:58,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:08:58,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:08:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:08:58,945 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) [2021-10-13 08:08:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:08:58,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-13 08:08:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:58,946 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:08:58,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:08:58,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:08:58,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:08:58,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 08:08:58,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 08:08:58,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 08:08:58,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 08:08:58,953 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 08:08:58,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:08:58,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:08:58 BasicIcfg [2021-10-13 08:08:58,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:08:58,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:08:58,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:08:58,956 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:08:58,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:08:54" (3/4) ... [2021-10-13 08:08:58,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:08:58,965 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 08:08:58,966 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 08:08:58,966 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 08:08:58,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 08:08:58,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:08:58,971 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:08:58,971 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:08:59,016 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:08:59,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:08:59,019 INFO L168 Benchmark]: Toolchain (without parser) took 5985.32 ms. Allocated memory was 109.1 MB in the beginning and 169.9 MB in the end (delta: 60.8 MB). Free memory was 74.0 MB in the beginning and 70.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:59,020 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:08:59,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.07 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 73.7 MB in the beginning and 101.6 MB in the end (delta: -27.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:59,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.35 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 99.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:59,022 INFO L168 Benchmark]: Boogie Preprocessor took 29.14 ms. Allocated memory is still 138.4 MB. Free memory was 99.7 MB in the beginning and 98.8 MB in the end (delta: 848.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:08:59,023 INFO L168 Benchmark]: RCFGBuilder took 489.01 ms. Allocated memory is still 138.4 MB. Free memory was 98.8 MB in the beginning and 86.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:59,023 INFO L168 Benchmark]: TraceAbstraction took 4688.66 ms. Allocated memory was 138.4 MB in the beginning and 169.9 MB in the end (delta: 31.5 MB). Free memory was 86.2 MB in the beginning and 73.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:59,025 INFO L168 Benchmark]: Witness Printer took 60.44 ms. Allocated memory is still 169.9 MB. Free memory was 73.4 MB in the beginning and 70.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:59,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 661.07 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 73.7 MB in the beginning and 101.6 MB in the end (delta: -27.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.35 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 99.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.14 ms. Allocated memory is still 138.4 MB. Free memory was 99.7 MB in the beginning and 98.8 MB in the end (delta: 848.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 489.01 ms. Allocated memory is still 138.4 MB. Free memory was 98.8 MB in the beginning and 86.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4688.66 ms. Allocated memory was 138.4 MB in the beginning and 169.9 MB in the end (delta: 31.5 MB). Free memory was 86.2 MB in the beginning and 73.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. * Witness Printer took 60.44 ms. Allocated memory is still 169.9 MB. Free memory was 73.4 MB in the beginning and 70.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2906.1ms, 93 PlacesBefore, 32 PlacesAfterwards, 85 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 2576 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1819, positive: 1740, positive conditional: 0, positive unconditional: 1740, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1070, positive: 1042, positive conditional: 0, positive unconditional: 1042, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1070, positive: 1030, positive conditional: 0, positive unconditional: 1030, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 121, positive: 61, positive conditional: 0, positive unconditional: 61, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1819, positive: 698, positive conditional: 0, positive unconditional: 698, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 1070, unknown conditional: 0, unknown unconditional: 1070] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4479.6ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 26.2ms, AutomataDifference: 297.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2992.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 132 SDtfs, 154 SDslu, 165 SDs, 0 SdLazy, 45 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 111.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 130.0ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.5ms SsaConstructionTime, 241.5ms SatisfiabilityAnalysisTime, 490.4ms InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! [2021-10-13 08:08:59,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c87069-647f-478e-9bc2-be98f53c1923/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...